diff --git a/frameworks/js/napi/user_auth/BUILD.gn b/frameworks/js/napi/user_auth/BUILD.gn
index 60e81b692..33bcbe686 100644
--- a/frameworks/js/napi/user_auth/BUILD.gn
+++ b/frameworks/js/napi/user_auth/BUILD.gn
@@ -33,8 +33,9 @@ ohos_shared_library("userauth") {
   ]
 
   deps = [
-    "//base/useriam/user_auth_framework/common:iam_utils",
-    "//base/useriam/user_auth_framework/frameworks/native/common:dfx",
+    "../../../../common:iam_utils",
+    "../../../native/client:userauth_client",
+    "../../../native/common:dfx",
   ]
 
   external_deps = [
@@ -42,7 +43,6 @@ ohos_shared_library("userauth") {
     "hiviewdfx_hilog_native:libhilog",
     "ipc:ipc_single",
     "napi:ace_napi",
-    "user_auth_framework:userauth_client",
   ]
 
   public_configs = [ ":userauth_public_config" ]
diff --git a/interfaces/inner_api/attributes.h b/interfaces/inner_api/attributes.h
index 5bd8ce01c..69b5c1eda 100644
--- a/interfaces/inner_api/attributes.h
+++ b/interfaces/inner_api/attributes.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file attributes.h
+ *
+ * @brief Attributes enum define.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef IAM_ATTRIBUTES_H
 #define IAM_ATTRIBUTES_H
 
@@ -25,79 +33,353 @@ namespace UserIam {
 namespace UserAuth {
 class Attributes final {
 public:
+    /**
+     * @brief The key to set attribute.
+     */
     enum AttributeKey : uint32_t {
+        /** Root tag. */
         ATTR_ROOT = 100000,
-        ATTR_RESULT_CODE = 100001,      // int32_t
-        ATTR_SIGNATURE = 100004,        // std::vector<uint8_t>
-        ATTR_IDENTIFY_MODE = 100005,    // uint32_t
-        ATTR_TEMPLATE_ID = 100006,      // uint64_t
-        ATTR_TEMPLATE_ID_LIST = 100007, // std::vector<uint64_t>
-        ATTR_ERROR_COUNT = 100008,      // int32_t
-        ATTR_REMAIN_TIMES = 100009,     // int32_t
-        ATTR_FREEZING_TIME = 100010,    // int32_t
-        ATTR_SESSION_ID = 100014,       // uint64_t
-        ATTR_SCHEDULE_VERSION = 100016, // uint32_t
-        ATTR_SCHEDULE_ID = 100020,      // uint64_t
-        ATTR_PIN_SUB_TYPE = 100021,     // int32_t
-        ATTR_SCHEDULE_MODE = 100022,    // int32_t
-        ATTR_PROPERTY_MODE = 100023,    // uint32_t
-        ATTR_AUTH_TYPE = 100024,        // int32_t
-        ATTR_CREDENTIAL_ID = 100025,    // uint64_t
-        ATTR_CALLER_UID = 100027,       // uint64_t
-        ATTR_RESULT = 100028,           // std::vector<uint8_t>
-        ATTR_CAPABILITY_LEVEL = 100029, // uint64_t
-        ATTR_ALGORITHM_INFO = 100030,   // uint64_t
-        ATTR_TIME_STAMP = 100031,       // uint64_t
-        ATTR_ROOT_SECRET = 100032,      // std::vector<uint8_t>
-        ATTR_AUTH_TOKEN = 100033,       // std::vector<uint8_t>
+        /** Result code, the value type is int32_t. */
+        ATTR_RESULT_CODE = 100001,
+        /** Signature, the value type is std::vector<uint8_t>. */
+        ATTR_SIGNATURE = 100004,
+        /** Identify mode, the value type is uint32_t. */
+        ATTR_IDENTIFY_MODE = 100005,
+        /** Template ID, the value type is uint64_t. */
+        ATTR_TEMPLATE_ID = 100006,
+        /** Template ID list, the value type is std::vector<uint64_t>. */
+        ATTR_TEMPLATE_ID_LIST = 100007,
+        /** Attribute error count, the value type is int32_t. */
+        ATTR_ERROR_COUNT = 100008,
+        /** Remain time, the value type is int32_t. */
+        ATTR_REMAIN_TIMES = 100009,
+        /** Freezing time, the value type is int32_t. */
+        ATTR_FREEZING_TIME = 100010,
+        /** Session ID, the value type is uint64_t. */
+        ATTR_SESSION_ID = 100014,
+        /** Schedule version, the value type is uint32_t. */
+        ATTR_SCHEDULE_VERSION = 100016,
+        /** Schedule ID, the value type is uint64_t. */
+        ATTR_SCHEDULE_ID = 100020,
+        /** Pin subtype, the value type is int32_t. */
+        ATTR_PIN_SUB_TYPE = 100021,
+        /** Schedule mode, the value type is int32_t. */
+        ATTR_SCHEDULE_MODE = 100022,
+        /** Property mode, the value type is uint32_t. */
+        ATTR_PROPERTY_MODE = 100023,
+        /** Authenticate type, the value type is int32_t. */
+        ATTR_AUTH_TYPE = 100024,
+        /** Credential ID, the value type is uint64_t. */
+        ATTR_CREDENTIAL_ID = 100025,
+        /** Caller UID, the value type is uint64_t. */
+        ATTR_CALLER_UID = 100027,
+        /** Tag of result, the value type is std::vector<uint8_t>. */
+        ATTR_RESULT = 100028,
+        /** Capability level, the value type is uint64_t. */
+        ATTR_CAPABILITY_LEVEL = 100029,
+        /** Algorithm infomation, the value type is uint64_t. */
+        ATTR_ALGORITHM_INFO = 100030,
+        /** Timer stamp, the value type is uint64_t. */
+        ATTR_TIME_STAMP = 100031,
+        /** Root secret, the value type is std::vector<uint8_t>. */
+        ATTR_ROOT_SECRET = 100032,
+        /** Auth token, the value type is std::vector<uint8_t>. */
+        ATTR_AUTH_TOKEN = 100033,
 
-        // private attrs
-        ATTR_USER_ID = 300000,          // int32_t
-        ATTR_EXTRA_INFO,                // std::vector<uint8_t>
-        ATTR_EXECUTOR_INDEX,            // uint64_t
-        ATTR_EXECUTOR_SENSOR_HINT,      // uint32_t
-        ATTR_EXECUTOR_MATCHER,          // uint32_t
-        ATTR_ACCESS_TOKEN_ID,           // uint32_t
+        /**
+         * Private attrs.
+         * User ID, the value type is int32_t.
+         */
+        ATTR_USER_ID = 300000,
+        /** Extra infomation, the value type is std::vector<uint8_t>. */
+        ATTR_EXTRA_INFO,
+        /** Executor ID, the value type is uint64_t. */
+        ATTR_EXECUTOR_INDEX,
+        /** ExecutorSensorHint, the value type is uint32_t. */
+        ATTR_EXECUTOR_SENSOR_HINT,
+        /** ExecutorMatcher, the value type is uint32_t. */
+        ATTR_EXECUTOR_MATCHER,
+        /** Access token ID, the value type is uint32_t. */
+        ATTR_ACCESS_TOKEN_ID,
     };
 
+    /**
+     * @brief Default constructor.
+     */
     Attributes();
 
+    /**
+     * @brief Overload constructor.
+     *
+     * This constructor prohibits implicit type conversion of input parameters.
+     *
+     * @param raw The value to be passed in when defining Attribute.
+     */
     explicit Attributes(const std::vector<uint8_t> &raw);
 
+    /**
+     * @brief Overload constructor.
+     *
+     * This constructor is used to define constant Attribute type.
+     *
+     * @param other The value to be passed in when defining Attribute.
+     */
     Attributes(const Attributes &other) = delete;
+
+    /**
+     * @brief Overload operator.
+     *
+     * @param other The value to be compared.
+     */
     Attributes &operator=(const Attributes &other) = delete;
 
+    /**
+     * @brief Overload constructor.
+     *
+     * @param other The value to be passed in when defining Attribute.
+     */
     Attributes(Attributes &&other) noexcept;
+
+    /**
+     * @brief Overload operator.
+     *
+     * @param other The value to be compared.
+     */
     Attributes &operator=(Attributes &&other) noexcept;
 
+    /**
+     * @brief Deconstructor.
+     */
     virtual ~Attributes();
 
+    /**
+     * @brief Set bool value.
+     *
+     * @param key The attribute key.
+     * @param value The bool value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetBoolValue(AttributeKey key, bool value);
+
+    /**
+     * @brief Set uint64 value.
+     *
+     * @param key The attribute key.
+     * @param value The uint64_t value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetUint64Value(AttributeKey key, uint64_t value);
+
+    /**
+     * @brief Set uint32_t value.
+     *
+     * @param key The attribute key.
+     * @param value The uint32_t value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetUint32Value(AttributeKey key, uint32_t value);
+
+    /**
+     * @brief Set uint16_t value.
+     *
+     * @param key The attribute key.
+     * @param value The uint16_t value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetUint16Value(AttributeKey key, uint16_t value);
+
+    /**
+     * @brief Set uint8_t value.
+     *
+     * @param key The attribute key.
+     * @param value The uint8_t value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetUint8Value(AttributeKey key, uint8_t value);
+
+    /**
+     * @brief Set int32_t value.
+     *
+     * @param key The attribute key.
+     * @param value The int32_t value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetInt32Value(AttributeKey key, int32_t value);
+
+    /**
+     * @brief Set string value.
+     *
+     * @param key The attribute key.
+     * @param value The string.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetStringValue(AttributeKey key, const std::string &value);
+
+    /**
+     * @brief Set Attributes value.
+     *
+     * @param key The attribute key.
+     * @param value The attributes type value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetAttributesValue(AttributeKey key, const Attributes &value);
+
+    /**
+     * @brief Set vector<uint64_t> value.
+     *
+     * @param key The attribute key.
+     * @param value The vector<uint64_t> value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetUint64ArrayValue(AttributeKey key, const std::vector<uint64_t> &value);
+
+    /**
+     * @brief Set vector<uint32_t> value.
+     *
+     * @param key The attribute key.
+     * @param value The vector<uint32_t> value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetUint32ArrayValue(AttributeKey key, const std::vector<uint32_t> &value);
+
+    /**
+     * @brief Set vector<uint16_t> value.
+     *
+     * @param key The attribute key.
+     * @param value The vector<uint16_t> value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetUint16ArrayValue(AttributeKey key, const std::vector<uint16_t> &value);
+
+    /**
+     * @brief Set vector<uint8_t> value.
+     *
+     * @param key The attribute key.
+     * @param value The vector<uint8_t> value.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool SetUint8ArrayValue(AttributeKey key, const std::vector<uint8_t> &value);
 
+    /**
+     * @brief Get bool value.
+     *
+     * @param key The attribute key.
+     * @param value Return bool value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetBoolValue(AttributeKey key, bool &value) const;
+
+    /**
+     * @brief Get uint64_t value.
+     *
+     * @param key The attribute key.
+     * @param value Return uint64_t value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetUint64Value(AttributeKey key, uint64_t &value) const;
+
+    /**
+     * @brief Get uint32_t value.
+     *
+     * @param key The attribute key.
+     * @param value Return uint32_t value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetUint32Value(AttributeKey key, uint32_t &value) const;
+
+    /**
+     * @brief Get uint16_t value.
+     *
+     * @param key The attribute key.
+     * @param value Return uint16_t value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetUint16Value(AttributeKey key, uint16_t &value) const;
+
+    /**
+     * @brief Get uint8_t value.
+     *
+     * @param key The attribute key.
+     * @param value Return uint8_t value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetUint8Value(AttributeKey key, uint8_t &value) const;
+
+    /**
+     * @brief Get int32_t value.
+     *
+     * @param key The attribute key.
+     * @param value Return int32_t value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetInt32Value(AttributeKey key, int32_t &value) const;
+
+    /**
+     * @brief Get string value.
+     *
+     * @param key The attribute key.
+     * @param value Return string corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetStringValue(AttributeKey key, std::string &value) const;
+
+    /**
+     * @brief Get vector<uint64_t> value.
+     *
+     * @param key The attribute key.
+     * @param value Return vector<uint64_t> value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetUint64ArrayValue(AttributeKey key, std::vector<uint64_t> &value) const;
+
+    /**
+     * @brief Get vector<uint32_t> value.
+     *
+     * @param key The attribute key.
+     * @param value Return vector<uint32_t> value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetUint32ArrayValue(AttributeKey key, std::vector<uint32_t> &value) const;
+
+    /**
+     * @brief Get vector<uint16_t> value.
+     *
+     * @param key The attribute key.
+     * @param value Return vector<uint16_t> value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetUint16ArrayValue(AttributeKey key, std::vector<uint16_t> &value) const;
+
+    /**
+     * @brief Get vector<uint8_t> value.
+     *
+     * @param key The attribute key.
+     * @param value Return vector<uint8_t> value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetUint8ArrayValue(AttributeKey key, std::vector<uint8_t> &value) const;
+
+    /**
+     * @brief Get Attributes value.
+     *
+     * @param key The attribute key.
+     * @param value Return Attributes value corresponding to key.
+     * @return Return success or not(true:success; false:failed).
+     */
     bool GetAttributesValue(AttributeKey key, Attributes &value) const;
+
+    /**
+     * @brief Serialize the Attribute object.
+     *
+     * @return Return serialized Attribute object.
+     */
     std::vector<uint8_t> Serialize() const;
+
+    /**
+     * @brief Get all keys of Attribute.
+     *
+     * @return Return all keys of Attribute.
+     */
     std::vector<AttributeKey> GetKeys() const;
 
 private:
diff --git a/interfaces/inner_api/co_auth_client.h b/interfaces/inner_api/co_auth_client.h
index cc888e817..356405601 100644
--- a/interfaces/inner_api/co_auth_client.h
+++ b/interfaces/inner_api/co_auth_client.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file co_auth_client.h
+ *
+ * @brief The definition of coAuth client.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef CO_AUTH_CLIENT_H
 #define CO_AUTH_CLIENT_H
 
@@ -24,10 +32,31 @@ namespace UserIam {
 namespace UserAuth {
 class CoAuthClient {
 public:
+    /**
+     * @brief Get coAuth client's instance.
+     *
+     * @return CoAuthClient's instance.
+     */
     static CoAuthClient &GetInstance();
+
+    /**
+     * @brief Deconstructor.
+     */
     virtual ~CoAuthClient() = default;
 
+    /**
+     * @brief Executor secure register into coAuth resource pool.
+     *
+     * @param info Information about executor which need to register into coAuth.
+     * @param callback Callback of executor register.
+     */
     virtual void Register(const ExecutorInfo &info, const std::shared_ptr<ExecutorRegisterCallback> &callback) = 0;
+
+    /**
+     * @brief Executor secure unregister from coAuth resource pool.
+     *
+     * @param info Information about executor which need to unregister from coAuth.
+     */
     virtual void Unregister(const ExecutorInfo &info) = 0;
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/co_auth_client_callback.h b/interfaces/inner_api/co_auth_client_callback.h
index f594c373f..d78135a36 100644
--- a/interfaces/inner_api/co_auth_client_callback.h
+++ b/interfaces/inner_api/co_auth_client_callback.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file co_auth_client_callback.h
+ *
+ * @brief Callback definitions returned by coAuth client.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef CO_AUTH_CLIENT_CALLBACK_H
 #define CO_AUTH_CLIENT_CALLBACK_H
 
@@ -24,14 +32,51 @@ namespace UserIam {
 namespace UserAuth {
 class ExecutorRegisterCallback {
 public:
+    /**
+     * @brief Called by the coAuth resource pool to tell the executor messenger ready.
+     *
+     * @param messenger Messenger used for execute process.
+     * @param publicKey Public key of the framework.
+     * @param templateIds Matched templateIds based on authType and executor info.
+     */
     virtual void OnMessengerReady(const std::shared_ptr<ExecutorMessenger> &messenger,
         const std::vector<uint8_t> &publicKey, const std::vector<uint64_t> &templateIds) = 0;
 
+    /**
+     * @brief Called by coAuth resource pool to tell the executor to begin.
+     *
+     * @param scheduleId Specify the current schedule.
+     * @param publicKey Public key of the framework.
+     * @param commandAttrs Properties of this operation.
+     * @return Return begin execute success or not(0:success; other:failed).
+     */
     virtual int32_t OnBeginExecute(uint64_t scheduleId, const std::vector<uint8_t> &publicKey,
         const Attributes &commandAttrs) = 0;
+
+    /**
+     * @brief Notify the executor to end the operation.
+     *
+     * @param scheduleId Specify the current schedule.
+     * @param commandAttrs Properties of this operation.
+     * @return Return end execute success or not(0:success; other:failed).
+     */
     virtual int32_t OnEndExecute(uint64_t scheduleId, const Attributes &commandAttrs) = 0;
 
+    /**
+     * @brief Called by coAuth resource pool to set executor's property.
+     *
+     * @param properties The properties need to set.
+     * @return Return set property success or not(0:success; other:failed).
+     */
     virtual int32_t OnSetProperty(const Attributes &properties) = 0;
+
+    /**
+     * @brief Called by coAuth resource pool to get executor's property.
+     *
+     * @param conditions The condition to get property.
+     * @param results The result of get property.
+     * @return Return get property success or not(0:success; other:failed).
+     */
     virtual int32_t OnGetProperty(const Attributes &conditions, Attributes &results) = 0;
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/co_auth_client_defines.h b/interfaces/inner_api/co_auth_client_defines.h
index 1d75b36d6..5f3cf5dfb 100644
--- a/interfaces/inner_api/co_auth_client_defines.h
+++ b/interfaces/inner_api/co_auth_client_defines.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file co_auth_client_defines.h
+ *
+ * @brief Type definitions used by coAuth client.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef CO_AUTH_CLIENT_DEFINES_H
 #define CO_AUTH_CLIENT_DEFINES_H
 
@@ -24,24 +32,59 @@
 namespace OHOS {
 namespace UserIam {
 namespace UserAuth {
+/**
+ * @brief Infomation used to describe an Executor.
+ */
 struct ExecutorInfo {
+    /** Authentication type supported by executor. */
     AuthType authType {0};
+    /** Executor role. */
     ExecutorRole executorRole {0};
+    /** Unique index of executor within each authType. */
     uint32_t executorSensorHint {0};
+    /** Sensor or algorithm type supported by executor. */
     uint32_t executorMatcher {0};
+    /** Executor secure level. */
     ExecutorSecureLevel esl {0};
+    /** Used to verify the result issued by the authenticator. */
     std::vector<uint8_t> publicKey {};
 };
 
 class AuthMessage {
 public:
+    /**
+     * @brief Function of type conversion.
+     *
+     * @param msg Incoming vector<uint8_t> type.
+     * @return Return shared_ptr<AuthMessage>.
+     */
     static std::shared_ptr<AuthMessage> As(const std::vector<uint8_t> &msg);
 };
 
 class ExecutorMessenger {
 public:
+    /**
+     * @brief Called by the executor, send authentication data to resource pool.
+     *
+     * @param scheduleId Specify the current schedule.
+     * @param transNum Properties of this operation.
+     * @param srcRole Source executor role.
+     * @param dstRole Destination executor role.
+     * @param msg Authentication message.
+     * @return Return send data success or not(0:success; other:failed).
+     */
     virtual int32_t SendData(uint64_t scheduleId, uint64_t transNum, ExecutorRole srcRole, ExecutorRole dstRole,
         const std::shared_ptr<AuthMessage> &msg) = 0;
+
+    /**
+     * @brief Called by the executor, send finish data to resource pool.
+     *
+     * @param scheduleId Specify the current schedule.
+     * @param srcRole Source executor role.
+     * @param resultcode Authentication result code.
+     * @param finalResult Authentication final result.
+     * @return Return finish success or not(0:success; other:failed).
+     */
     virtual int32_t Finish(uint64_t scheduleId, ExecutorRole srcRole, int32_t resultCode,
         const Attributes &finalResult) = 0;
 };
diff --git a/interfaces/inner_api/iam_common_defines.h b/interfaces/inner_api/iam_common_defines.h
index a6ecc3067..a25f1a16f 100644
--- a/interfaces/inner_api/iam_common_defines.h
+++ b/interfaces/inner_api/iam_common_defines.h
@@ -13,85 +13,167 @@
  * limitations under the License.
  */
 
+/**
+ * @file iam_common_defines.h
+ *
+ * @brief Some common defines in IAM.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef IAM_COMMON_DEFINES_H
 #define IAM_COMMON_DEFINES_H
 
 namespace OHOS {
 namespace UserIam {
 namespace UserAuth {
+/** Max length of challenge. */
 constexpr size_t MAX_CHALLENG_LEN = 32;
 
+/**
+ * @brief Defines authentication type.
+ */
 enum AuthType : int32_t {
+    /** All authentication types. */
     ALL = 0,
+    /** Pin authentication. */
     PIN = 1,
+    /** Face authentication. */
     FACE = 2,
+    /** Fingerprint authentication. */
     FINGERPRINT = 4,
 };
 
+/**
+ * @brief Defines pin auth's subtype.
+ */
 enum PinSubType : int32_t {
+    /** Digit password with fixed length of six. */
     PIN_SIX = 10000,
+    /** Digit password with unfixed length. */
     PIN_NUMBER = 10001,
+    /** Complex password with number and alphabet. */
     PIN_MIXED = 10002,
+    /** Max pin. */
     PIN_MAX,
 };
 
+/**
+ * @brief Enumerates executor roles.
+ */
 enum ExecutorRole : int32_t {
+    /** Scheduler executor. */
     SCHEDULER = 0,
+    /** The executor acts as a collector. */
     COLLECTOR = 1,
+    /** The executor acts as a verifier. */
     VERIFIER = 2,
+    /** The executor acts as a collector and verifier. */
     ALL_IN_ONE = 3,
 };
 
+/**
+ * @brief Enumerates executor security levels.
+ */
 enum ExecutorSecureLevel : int32_t {
+    /** Executor secure level 0. */
     ESL0 = 0,
+    /** Executor secure level 1. */
     ESL1 = 1,
+    /** Executor secure level 2. */
     ESL2 = 2,
+    /** Executor secure level 3. */
     ESL3 = 3,
 };
 
+/**
+ * @brief Authentication trust level
+ */
 enum AuthTrustLevel : uint32_t {
+    /** Auth trust level 1. */
     ATL1 = 10000,
+    /** Auth trust level 2. */
     ATL2 = 20000,
+    /** Auth trust level 3. */
     ATL3 = 30000,
+    /** Auth trust level 4. */
     ATL4 = 40000,
 };
 
+/**
+ * @brief Schedule mode.
+ */
 enum ScheduleMode : int32_t {
+    /** The schedule mode is enrollment. */
     ENROLL = 0,
+    /** The schedule mode is authentication. */
     AUTH = 1,
+    /** The schedule mode is identification. */
     IDENTIFY = 2,
 };
 
+/**
+ * @brief Property mode.
+ */
 enum PropertyMode : uint32_t {
+    /** The property mode is init algorithm. */
     PROPERTY_INIT_ALGORITHM = 1,
+    /** The property mode is delete. */
     PROPERTY_MODE_DEL = 2,
+    /** The property mode is get. */
     PROPERTY_MODE_GET = 3,
+    /** The property mode is set. */
     PROPERTY_MODE_SET = 4,
+    /** The property mode is freeze. */
     PROPERTY_MODE_FREEZE = 5,
+    /** The property mode is unfreeze. */
     PROPERTY_MODE_UNFREEZE = 6,
 };
 
+/**
+ * @brief The result code.
+ */
 enum ResultCode : int32_t {
+    /** The result is success. */
     SUCCESS = 0,
+    /** Compile fail. */
     FAIL = 1,
+    /** The result is fail, because an unknown error occurred. */
     GENERAL_ERROR = 2,
+    /** The result is fail, because the request was canceled. */
     CANCELED = 3,
+    /** The result is fail ,because of time out. */
     TIMEOUT = 4,
+    /** The result is fail ,because type is not support. */
     TYPE_NOT_SUPPORT = 5,
+    /** The result is fail ,because trust level is not support. */
     TRUST_LEVEL_NOT_SUPPORT = 6,
+    /** The result is fail, because the service was busy. */
     BUSY = 7,
+    /** The result is fail, because parameters is invalid. */
     INVALID_PARAMETERS = 8,
+    /** The result if fail, because the status is locked. */
     LOCKED = 9,
+    /** The result is fail, because the user was not enrolled. */
     NOT_ENROLLED = 10,
+    /** The result is fail, because the hardware is not supported. */
     HARDWARE_NOT_SUPPORTED = 11,
-    SYSTEM_ERROR_CODE_BEGIN = 1000, // error code for system
+    /** The result is fail, because something wrong from system. */
+    SYSTEM_ERROR_CODE_BEGIN = 1000,
+    /** The result is fail, because something wrong from ipc. */
     IPC_ERROR = 1001,
+    /** The result is fail, because the context ID is invalid. */
     INVALID_CONTEXT_ID = 1002,
+    /** The result is fail, because something wrong when read parcel. */
     READ_PARCEL_ERROR = 1003,
+    /** The result is fail, because something wrong when write parcel. */
     WRITE_PARCEL_ERROR = 1004,
+    /** The result is fail, because permission check is failed. */
     CHECK_PERMISSION_FAILED = 1005,
+    /** The result is fail, because the hdi interface is invalid. */
     INVALID_HDI_INTERFACE = 1006,
-    VENDOR_ERROR_CODE_BEGIN = 10000, // error code for vendor
+    /** The result is fail, because something wrong from vendor. */
+    VENDOR_ERROR_CODE_BEGIN = 10000,
 };
 } // namespace UserAuth
 } // namespace UserIam
diff --git a/interfaces/inner_api/iam_executor/iam_executor_framework_types.h b/interfaces/inner_api/iam_executor/iam_executor_framework_types.h
index 7538b3aea..f342582f3 100644
--- a/interfaces/inner_api/iam_executor/iam_executor_framework_types.h
+++ b/interfaces/inner_api/iam_executor/iam_executor_framework_types.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file iam_executor_framework_types.h
+ *
+ * @brief Some type defines in executor framwork.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef IAM_EXECUTOR_FRAMEWORK_TYPES_H
 #define IAM_EXECUTOR_FRAMEWORK_TYPES_H
 
@@ -22,15 +30,27 @@
 namespace OHOS {
 namespace UserIam {
 namespace UserAuth {
+/**
+ * @brief Defines authentication result.
+ */
 enum UserAuthResult : int32_t {
+    /** Authentication result is success. */
     USERAUTH_SUCCESS = 0,
+    /** Authentication result is error. */
     USERAUTH_ERROR = 1,
 };
 
+/**
+ * @brief Defines Template infomation.
+ */
 struct TemplateInfo {
+    /** Executor type. */
     uint32_t executorType;
+    /** Freezing time. */
     int32_t freezingTime;
+    /** Remain time. */
     int32_t remainTimes;
+    /** Extra Info. */
     std::vector<uint8_t> extraInfo;
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/iam_executor/iam_executor_iauth_driver_hdi.h b/interfaces/inner_api/iam_executor/iam_executor_iauth_driver_hdi.h
index 6173f44af..e6482ecd6 100644
--- a/interfaces/inner_api/iam_executor/iam_executor_iauth_driver_hdi.h
+++ b/interfaces/inner_api/iam_executor/iam_executor_iauth_driver_hdi.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file iam_executor_iauth_driver_hdi.h
+ *
+ * @brief Hardware device interface for authenticate driver.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef IAM_EXECUTOR_IAUTH_DRIVER_HDI_H
 #define IAM_EXECUTOR_IAUTH_DRIVER_HDI_H
 
@@ -27,9 +35,21 @@ namespace UserIam {
 namespace UserAuth {
 class IAuthDriverHdi {
 public:
+    /**
+     * @brief Default constructor.
+     */
     IAuthDriverHdi() = default;
+
+    /**
+     * @brief Deconstructor.
+     */
     virtual ~IAuthDriverHdi() = default;
 
+    /**
+     * @brief Get the list of executor.
+     *
+     * @param executorList The list of executor.
+     */
     virtual void GetExecutorList(std::vector<std::shared_ptr<UserAuth::IAuthExecutorHdi>> &executorList) = 0;
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/iam_executor/iam_executor_iauth_executor_hdi.h b/interfaces/inner_api/iam_executor/iam_executor_iauth_executor_hdi.h
index 3b2ee113a..f4c278468 100644
--- a/interfaces/inner_api/iam_executor/iam_executor_iauth_executor_hdi.h
+++ b/interfaces/inner_api/iam_executor/iam_executor_iauth_executor_hdi.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file iam_executor_iauth_executor_hdi.h
+ *
+ * @brief Hardware device interface for authenticate executor.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef IAM_EXECUTOR_IAUTH_EXECUTOR_HDI_H
 #define IAM_EXECUTOR_IAUTH_EXECUTOR_HDI_H
 
@@ -29,22 +37,105 @@ namespace UserIam {
 namespace UserAuth {
 class IAuthExecutorHdi {
 public:
+    /**
+     * @brief Default constructor.
+     */
     IAuthExecutorHdi() = default;
+
+    /**
+     * @brief Deconstructor.
+     */
     virtual ~IAuthExecutorHdi() = default;
 
+    /**
+     * @brief Get executor infomation.
+     *
+     * @param info The executor infomation.
+     * @return Return the result success or error code{@link ResultCode}.
+     */
     virtual ResultCode GetExecutorInfo(ExecutorInfo &info) = 0;
+
+    /**
+     * @brief Get template infomation.
+     *
+     * @param templateId Template id.
+     * @param info The template infomation.
+     * @return Return the result success or error code{@link ResultCode}.
+     */
     virtual ResultCode GetTemplateInfo(uint64_t templateId, UserAuth::TemplateInfo &info) = 0;
+
+    /**
+     * @brief Register is finish.
+     *
+     * @param templateIdList Template ID list.
+     * @param frameworkPublicKey Framework publickey
+     * @param extraInfo Extra infomation.
+     * @return Return the result success or error code{@link ResultCode}.
+     */
     virtual ResultCode OnRegisterFinish(const std::vector<uint64_t> &templateIdList,
         const std::vector<uint8_t> &frameworkPublicKey, const std::vector<uint8_t> &extraInfo) = 0;
+
+    /**
+     * @brief Begin enroll.
+     *
+     * @param scheduleId Current enroll schedule ID.
+     * @param tokenId Current enroll token ID.
+     * @param extraInfo Extra information of enroll.
+     * @param callbackObj Callback of enroll result.
+     * @return Return the result success or error code{@link ResultCode}.
+     */
     virtual ResultCode Enroll(uint64_t scheduleId, uint32_t tokenId, const std::vector<uint8_t> &extraInfo,
         const std::shared_ptr<UserAuth::IExecuteCallback> &callbackObj) = 0;
+
+    /**
+     * @brief Begin authenticate.
+     *
+     * @param scheduleId Current authenticate schedule ID.
+     * @param tokenId Current authenticate token ID.
+     * @param templateIdList Template ID list.
+     * @param extraInfo Extra information of authenticate.
+     * @param callbackObj Callback of authenticate result.
+     * @return Return the result success or error code{@link ResultCode}.
+     */
     virtual ResultCode Authenticate(uint64_t scheduleId, uint32_t tokenId, const std::vector<uint64_t> &templateIdList,
         const std::vector<uint8_t> &extraInfo, const std::shared_ptr<UserAuth::IExecuteCallback> &callbackObj) = 0;
-    virtual ResultCode Identify(uint64_t scheduleId, uint32_t tokenId, const std::vector<uint8_t> &extraInfo,
 
+    /**
+     * @brief Begin identify.
+     *
+     * @param scheduleId Current identify schedule ID.
+     * @param tokenId Current identify token ID.
+     * @param extraInfo Extra information of identify.
+     * @param callbackObj Callback of identify result.
+     * @return Return the result success or error code{@link ResultCode}.
+     */
+    virtual ResultCode Identify(uint64_t scheduleId, uint32_t tokenId, const std::vector<uint8_t> &extraInfo,
         const std::shared_ptr<UserAuth::IExecuteCallback> &callbackObj) = 0;
+
+    /**
+     * @brief Delete.
+     *
+     * @param templateIdList Template ID list.
+     * @return Return the result success or error code{@link ResultCode}.
+     */
     virtual ResultCode Delete(const std::vector<uint64_t> &templateIdList) = 0;
+
+    /**
+     * @brief Cancel the action of executor.
+     *
+     * @param scheduleId Current working schedule ID.
+     * @return Return the result success or error code{@link ResultCode}.
+     */
     virtual ResultCode Cancel(uint64_t scheduleId) = 0;
+
+    /**
+     * @brief Send command.
+     *
+     * @param commandId Command ID.
+     * @param extraInfo Extra information of send command.
+     * @param callbackObj Callback of send command result.
+     * @return Return the result success or error code{@link ResultCode}.
+     */
     virtual ResultCode SendCommand(PropertyMode commandId, const std::vector<uint8_t> &extraInfo,
         const std::shared_ptr<UserAuth::IExecuteCallback> &callbackObj) = 0;
 };
diff --git a/interfaces/inner_api/iam_executor/iam_executor_idriver_manager.h b/interfaces/inner_api/iam_executor/iam_executor_idriver_manager.h
index a14e0bb85..6051a5d0e 100644
--- a/interfaces/inner_api/iam_executor/iam_executor_idriver_manager.h
+++ b/interfaces/inner_api/iam_executor/iam_executor_idriver_manager.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file iam_executor_idriver_manager.h
+ *
+ * @brief Driver manager of executor.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef IAM_EXECUTOR_IDRIVER_MANAGER_H
 #define IAM_EXECUTOR_IDRIVER_MANAGER_H
 
@@ -24,16 +32,34 @@
 namespace OHOS {
 namespace UserIam {
 namespace UserAuth {
+/**
+ * @brief Hardware device interface config.
+ */
 struct HdiConfig {
+    /** Driver ID. */
     uint16_t id; // non-zero
+    /** The current driver. */
     std::shared_ptr<IAuthDriverHdi> driver;
 };
 
 class IDriverManager {
 public:
+    /**
+     * @brief Default constructor.
+     */
     IDriverManager() = default;
+
+    /**
+     * @brief Deconstructor.
+     */
     virtual ~IDriverManager() = default;
 
+    /**
+     * @brief Start.
+     *
+     * @param hdiName2Config Hardware device interface name and config.
+     * @return Return the result success or not.
+     */
     static int32_t Start(const std::map<std::string, HdiConfig> &hdiName2Config);
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/iam_executor/iam_executor_iexecute_callback.h b/interfaces/inner_api/iam_executor/iam_executor_iexecute_callback.h
index f1730493c..4fbd86ad4 100644
--- a/interfaces/inner_api/iam_executor/iam_executor_iexecute_callback.h
+++ b/interfaces/inner_api/iam_executor/iam_executor_iexecute_callback.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file iam_executor_idriver_manager.h
+ *
+ * @brief Driver manager of executor.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef IAM_EXECUTOR_IEXECUTE_CALLBACK_H
 #define IAM_EXECUTOR_IEXECUTE_CALLBACK_H
 
@@ -27,11 +35,38 @@ namespace UserAuth {
 class IExecuteCallback {
 public:
     using ResultCode = UserIam::UserAuth::ResultCode;
+
+    /**
+     * @brief Default constructor.
+     */
     IExecuteCallback() = default;
+
+    /**
+     * @brief Deconstructor.
+     */
     virtual ~IExecuteCallback() = default;
 
+    /**
+     * @brief The callback return execute result.
+     *
+     * @param result The result success or error code{@link ResultCode}.
+     * @param extraInfo Other related information about execute.
+     */
     virtual void OnResult(ResultCode result, const std::vector<uint8_t> &extraInfo) = 0;
+
+    /**
+     * @brief The callback return execute result.
+     *
+     * @param result The result success or error code{@link ResultCode}.
+     */
     virtual void OnResult(ResultCode result) = 0;
+
+    /**
+     * @brief The callback return authenticate acquire information.
+     *
+     * @param acquireInfo Acquire info needed to be pass in.
+     * @param extraInfo Other related information about execute.
+     */
     virtual void OnAcquireInfo(int32_t acquire, const std::vector<uint8_t> &extraInfo) = 0;
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/user_auth_client.h b/interfaces/inner_api/user_auth_client.h
index 9a510c4b4..044a72b16 100644
--- a/interfaces/inner_api/user_auth_client.h
+++ b/interfaces/inner_api/user_auth_client.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file user_auth_client.h
+ *
+ * @brief The definition of user auth client.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef USER_AUTH_CLIENT_H
 #define USER_AUTH_CLIENT_H
 
@@ -27,20 +35,76 @@ namespace UserIam {
 namespace UserAuth {
 class UserAuthClient {
 public:
+    /**
+     * @brief Get userAuth client's instance.
+     *
+     * @return UserAuthClient's instance.
+     */
     static UserAuthClient &GetInstance();
+
+    /**
+     * @brief Deconstructor.
+     */
     virtual ~UserAuthClient() = default;
 
+    /**
+     * @brief Get executor property.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @param request AuthType and AttributeKey to get property.
+     * @param callback Callback of get property result.
+     */
     virtual void GetProperty(int32_t userId, const GetPropertyRequest &request,
         const std::shared_ptr<GetPropCallback> &callback) = 0;
+
+    /**
+     * @brief Set executor property.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @param request AuthType, propertyMode and attributes to set property.
+     * @param callback Callback of set property result.
+     */
     virtual void SetProperty(int32_t userId, const SetPropertyRequest &request,
         const std::shared_ptr<SetPropCallback> &callback) = 0;
 
+    /**
+     * @brief Begin user authentication according to ATL and authType.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @param challenge auth challenge which can prevent replay attacks.
+     * @param authType Auth type supported by executor.
+     * @param atl Auth trust level.
+     * @param callback Callback of user authentication result.
+     * @return Return context ID of authentication.
+     */
     virtual uint64_t BeginAuthentication(int32_t userId, const std::vector<uint8_t> &challenge, AuthType authType,
         AuthTrustLevel atl, const std::shared_ptr<AuthenticationCallback> &callback) = 0;
+
+    /**
+     * @brief Cancel user authentication.
+     *
+     * @param contextId Indicates the authenticate context index.
+     * @return Return cancelAuthentication result(0:success; other:failed).
+     */
     virtual int32_t CancelAuthentication(uint64_t contextId) = 0;
 
+    /**
+     * @brief Begin user identification according to authType.
+     *
+     * @param challenge auth challenge which can prevent replay attacks.
+     * @param authType Auth type supported by executor.
+     * @param callback Callback of user identification result.
+     * @return Return context ID of authentication.
+     */
     virtual uint64_t BeginIdentification(const std::vector<uint8_t> &challenge, AuthType authType,
         const std::shared_ptr<IdentificationCallback> &callback) = 0;
+
+    /**
+     * @brief Cancel user identification.
+     *
+     * @param contextId Indicates the identification context index.
+     * @return Return CancelIdentification result(0:success; other:failed).
+     */
     virtual int32_t CancelIdentification(uint64_t contextId) = 0;
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/user_auth_client_callback.h b/interfaces/inner_api/user_auth_client_callback.h
index 42a6a9a4f..172246974 100644
--- a/interfaces/inner_api/user_auth_client_callback.h
+++ b/interfaces/inner_api/user_auth_client_callback.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file user_auth_client_callback.h
+ *
+ * @brief Callback definitions returned by user auth client.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef USER_AUTH_CLIENT_CALLBACK_H
 #define USER_AUTH_CLIENT_CALLBACK_H
 
@@ -24,23 +32,63 @@ namespace UserIam {
 namespace UserAuth {
 class AuthenticationCallback {
 public:
+    /**
+     * @brief The callback return authenticate acquire information.
+     *
+     * @param module Module of current acquire info.
+     * @param acquireInfo Acquire info needed to be pass in.
+     * @param extraInfo Other related information about authentication.
+     */
     virtual void OnAcquireInfo(int32_t module, uint32_t acquireInfo, const Attributes &extraInfo) = 0;
+
+    /**
+     * @brief The callback return authenticate result.
+     *
+     * @param result The result success or error code{@link ResultCode}.
+     * @param extraInfo Other related information about authentication.
+     */
     virtual void OnResult(int32_t result, const Attributes &extraInfo) = 0;
 };
 
 class IdentificationCallback {
 public:
+    /**
+     * @brief The callback return identification acquire information.
+     *
+     * @param module Module of current acquire info.
+     * @param acquireInfo Acquire info needed to be pass in.
+     * @param extraInfo Other related information about identification.
+     */
     virtual void OnAcquireInfo(int32_t module, uint32_t acquireInfo, const Attributes &extraInfo) = 0;
+
+    /**
+     * @brief The callback return identification result.
+     *
+     * @param result The result success or error code{@link ResultCode}.
+     * @param extraInfo Other related information about identification.
+     */
     virtual void OnResult(int32_t result, const Attributes &extraInfo) = 0;
 };
 
 class GetPropCallback {
 public:
+    /**
+     * @brief The callback return get property result.
+     *
+     * @param result The result success or error code{@link ResultCode}.
+     * @param extraInfo Other related information about get property.
+     */
     virtual void OnResult(int32_t result, const Attributes &extraInfo) = 0;
 };
 
 class SetPropCallback {
 public:
+    /**
+     * @brief The callback return set property result.
+     *
+     * @param result The result success or error code{@link ResultCode}.
+     * @param extraInfo Other related information about set property.
+     */
     virtual void OnResult(int32_t result, const Attributes &extraInfo) = 0;
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/user_auth_client_defines.h b/interfaces/inner_api/user_auth_client_defines.h
index a33e8eae4..9cc520f30 100644
--- a/interfaces/inner_api/user_auth_client_defines.h
+++ b/interfaces/inner_api/user_auth_client_defines.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file co_auth_client_defines.h
+ *
+ * @brief Type definitions used by user auth client.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef USER_AUTH_CLIENT_DEFINES_H
 #define USER_AUTH_CLIENT_DEFINES_H
 
@@ -22,14 +30,25 @@
 namespace OHOS {
 namespace UserIam {
 namespace UserAuth {
+/**
+ * @brief Executor property needed to get.
+ */
 struct GetPropertyRequest {
+    /** Auth type supported by executor. */
     AuthType authType {0};
+    /** The keys of attribute needed to get. */
     std::vector<Attributes::AttributeKey> keys {};
 };
 
+/**
+ * @brief Executor property needed to set.
+ */
 struct SetPropertyRequest {
+    /** Auth type supported by executor. */
     AuthType authType {0};
+    /**  The executor's property mode. */
     PropertyMode mode {0};
+    /** The attributes needed to set. */
     Attributes attrs {};
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/user_idm_client.h b/interfaces/inner_api/user_idm_client.h
index 86d223557..939ce610b 100644
--- a/interfaces/inner_api/user_idm_client.h
+++ b/interfaces/inner_api/user_idm_client.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file user_idm_client.h
+ *
+ * @brief The definition of idm client.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef USER_IDM_CLIENT_H
 #define USER_IDM_CLIENT_H
 
@@ -29,27 +37,118 @@ namespace UserIam {
 namespace UserAuth {
 class UserIdmClient {
 public:
+    /**
+     * @brief Get userIdm client's instance.
+     *
+     * @return UserIdmClient's instance.
+     */
     static UserIdmClient &GetInstance();
+
+    /**
+     * @brief Deconstructor.
+     */
     virtual ~UserIdmClient() = default;
 
+    /**
+     * @brief Open session with user identity management.
+     *
+     * User identity Management can be used only after the session is open,
+     * and the session is valid for ten minutes.
+     * @param userId System userId, generated by account subsystem.
+     * @return Return the challenge.
+     */
     virtual std::vector<uint8_t> OpenSession(int32_t userId) = 0;
+
+    /**
+     * @brief Open session with user identity management.
+     *
+     * @param userId System userId, generated by account subsystem.
+     */
     virtual void CloseSession(int32_t userId) = 0;
 
+    /**
+     * @brief Add user credential information.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @param para Include authType, pinSubType and token.
+     * @param callback Callback of add credential result.
+     */
     virtual void AddCredential(int32_t userId, const CredentialParameters &para,
         const std::shared_ptr<UserIdmClientCallback> &callback) = 0;
+
+    /**
+     * @brief Update user credential information.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @param para Include authType, pinSubType and token(PIN).
+     * @param callback Callback of update credential result.
+     */
     virtual void UpdateCredential(int32_t userId, const CredentialParameters &para,
         const std::shared_ptr<UserIdmClientCallback> &callback) = 0;
+
+    /**
+     * @brief Cancel add user credential.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @return Return Cancel result(0:success; other:failed).
+     */
     virtual int32_t Cancel(int32_t userId) = 0;
 
+    /**
+     * @brief Delete user's credential according to credentialId.
+     *
+     * Only support to delete non-password credentials.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @param credentialId User credentialId.
+     * @param authToken PIN auth token.
+     * @param callback Callback of delete credential result.
+     */
     virtual void DeleteCredential(int32_t userId, uint64_t credentialId, const std::vector<uint8_t> &authToken,
         const std::shared_ptr<UserIdmClientCallback> &callback) = 0;
 
+    /**
+     * @brief Delete user's PIN.
+     *
+     * When deleting user's PIN, all credentials of the user will be deleted.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @param authToken PIN auth token.
+     * @param callback Callback of delete user's credential result.
+     */
     virtual void DeleteUser(int32_t userId, const std::vector<uint8_t> &authToken,
         const std::shared_ptr<UserIdmClientCallback> &callback) = 0;
+
+    /**
+     * @brief Erase user.
+     *
+     * This method is used for administrators to delete user and
+     * delete all credentials of the user at the same time.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @param callback Callback of erase user result.
+     * @return Return erase user success or not(0:success; other:failed).
+     */
     virtual int32_t EraseUser(int32_t userId, const std::shared_ptr<UserIdmClientCallback> &callback) = 0;
 
+    /**
+     * @brief get user's credential information.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @param authType Authtype supported by executor.
+     * @param callback Callback of get credentialInfo result.
+     * @return Return get credentialInfo success or not(0:success; other:failed).
+     */
     virtual int32_t GetCredentialInfo(int32_t userId, AuthType authType,
         const std::shared_ptr<GetCredentialInfoCallback> &callback) = 0;
+
+    /**
+     * @brief get security user information.
+     *
+     * @param userId System userId, generated by account subsystem.
+     * @param callback Return get security userInfo result.
+     * @return Return get security userInfo success or not(0:success; other:failed).
+     */
     virtual int32_t GetSecUserInfo(int32_t userId, const std::shared_ptr<GetSecUserInfoCallback> &callback) = 0;
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/user_idm_client_callback.h b/interfaces/inner_api/user_idm_client_callback.h
index d851a61ec..021cfad08 100644
--- a/interfaces/inner_api/user_idm_client_callback.h
+++ b/interfaces/inner_api/user_idm_client_callback.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file user_idm_client_callback.h
+ *
+ * @brief Callback definitions returned by idm client.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef USER_IDM_CLIENT_CALLBACK_H
 #define USER_IDM_CLIENT_CALLBACK_H
 
@@ -25,17 +33,41 @@ namespace UserIam {
 namespace UserAuth {
 class GetCredentialInfoCallback {
 public:
+    /**
+     * @brief The callback return get credential info result.
+     *
+     * @param infoList The credential info list.
+     */
     virtual void OnCredentialInfo(const std::vector<CredentialInfo> &infoList) = 0;
 };
 
 class GetSecUserInfoCallback {
 public:
+    /**
+     * @brief The callback return get security user info result.
+     *
+     * @param info The security user info.
+     */
     virtual void OnSecUserInfo(const SecUserInfo &info) = 0;
 };
 
 class UserIdmClientCallback {
 public:
+    /**
+     * @brief The callback return authenticate acquire information.
+     *
+     * @param module Module of current acquire info.
+     * @param acquireInfo Acquire info needed to be pass in.
+     * @param extraInfo Other related information about authentication.
+     */
     virtual void OnAcquireInfo(int32_t module, uint32_t acquireInfo, const Attributes &extraInfo) = 0;
+
+    /**
+     * @brief The callback return set property result.
+     *
+     * @param result The result success or error code{@link ResultCode}.
+     * @param extraInfo Other related information about set property.
+     */
     virtual void OnResult(int32_t result, const Attributes &extraInfo) = 0;
 };
 } // namespace UserAuth
diff --git a/interfaces/inner_api/user_idm_client_defines.h b/interfaces/inner_api/user_idm_client_defines.h
index f81fd2f4a..b0e2972ae 100644
--- a/interfaces/inner_api/user_idm_client_defines.h
+++ b/interfaces/inner_api/user_idm_client_defines.h
@@ -13,6 +13,14 @@
  * limitations under the License.
  */
 
+/**
+ * @file user_idm_client_defines.h
+ *
+ * @brief Type definitions used by idm client.
+ * @since 3.1
+ * @version 3.2
+ */
+
 #ifndef USER_IDM_CLIENT_DEFINES_H
 #define USER_IDM_CLIENT_DEFINES_H
 
@@ -23,26 +31,49 @@
 namespace OHOS {
 namespace UserIam {
 namespace UserAuth {
+/**
+ * @brief User credential infomation returned.
+ */
 struct CredentialInfo {
+    /* Auth type supported by executor. */
     AuthType authType {0};
+    /* Auth subtype of PIN. */
     std::optional<PinSubType> pinType {};
+    /* User credentialId is generated by idm to associate userId and templateId. */
     uint64_t credentialId {0};
+    /* User templateId is generated by executor to represent user characteristics. */
     uint64_t templateId {0};
 };
 
+/**
+ * @brief Define credential enrollment information.
+ */
 struct EnrolledInfo {
+    /** Auth type supported by executor. */
     AuthType authType {0};
+    /** Enrolled ID. */
     uint64_t enrolledId {0};
 };
 
+/**
+ * @brief Define security user information.
+ */
 struct SecUserInfo {
+    /** Security user ID. */
     uint64_t secureUid {0};
+    /** The user credential enrollment infomation. */
     std::vector<EnrolledInfo> enrolledInfo {};
 };
 
+/**
+ * @brief Parameters needed to set about user credential information.
+ */
 struct CredentialParameters {
+    /** Auth type supported by executor. */
     AuthType authType {0};
+    /** Auth subtype of PIN. */
     std::optional<PinSubType> pinType {};
+    /** Auth token. */
     std::vector<uint8_t> token {};
 };
 } // namespace UserAuth