diff --git a/bundle.json b/bundle.json
index 1ae9187..034caa2 100644
--- a/bundle.json
+++ b/bundle.json
@@ -119,7 +119,8 @@
         ],
         "test": [
             "//base/user_iam/user_auth/test/user_idm:user_idm_unittest",
-            "//base/user_iam/user_auth/test/user_auth:user_auth_unittest"
+            "//base/user_iam/user_auth/test/user_auth:user_auth_unittest",
+            "//base/user_iam/user_auth/test/user_idm/fuzztest/user_idm_fuzzer:UserIdmFuzzTest"
         ]
       }
     }
diff --git a/test/user_idm/fuzztest/user_idm_fuzzer/BUILD.gn b/test/user_idm/fuzztest/user_idm_fuzzer/BUILD.gn
new file mode 100644
index 0000000..6267f8d
--- /dev/null
+++ b/test/user_idm/fuzztest/user_idm_fuzzer/BUILD.gn
@@ -0,0 +1,51 @@
+# Copyright (c) 2022 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import("//build/ohos.gni")
+import("//build/test.gni")
+
+ohos_fuzztest("UserIdmFuzzTest") {
+  module_out_path = "user_iam/user_auth/user_idm"
+  fuzz_config_file =
+      "//base/user_iam/user_auth/test/user_idm/fuzztest/user_idm_fuzzer"
+
+  cflags = [
+    "-g",
+    "-O0",
+    "-Wno-unused-variable",
+    "-fno-omit-frame-pointer",
+  ]
+
+  include_dirs = [
+    "//base/user_iam/user_auth/common/logs/user_idm",
+    "//base/user_iam/user_auth/frameworks/user_idm/inc",
+    "//base/user_iam/user_auth/services/user_idm/inc",
+    "//base/user_iam/user_auth/interfaces/inner_api/user_idm",
+    "//base/user_iam/user_auth/common/logs",
+  ]
+
+  sources = [ "user_idm_fuzzer.cpp" ]
+
+  deps = [
+    "//base/user_iam/user_auth/common:iam_test",
+    "//base/user_iam/user_auth/services:userauthservice",
+  ]
+
+  external_deps = [
+    "hiviewdfx_hilog_native:libhilog",
+    "ipc:ipc_core",
+    "safwk:system_ability_fwk",
+    "samgr_standard:samgr_proxy",
+    "utils_base:utils",
+  ]
+}
diff --git a/test/user_idm/fuzztest/user_idm_fuzzer/corpus/init b/test/user_idm/fuzztest/user_idm_fuzzer/corpus/init
new file mode 100644
index 0000000..bc977bd
--- /dev/null
+++ b/test/user_idm/fuzztest/user_idm_fuzzer/corpus/init
@@ -0,0 +1,14 @@
+# Copyright (c) 2022 Huawei Device Co., Ltd.
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+FUZZ
\ No newline at end of file
diff --git a/test/user_idm/fuzztest/user_idm_fuzzer/project.xml b/test/user_idm/fuzztest/user_idm_fuzzer/project.xml
new file mode 100644
index 0000000..406517d
--- /dev/null
+++ b/test/user_idm/fuzztest/user_idm_fuzzer/project.xml
@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2022 Huawei Device Co., Ltd.
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<fuzz_config>
+  <fuzztest>
+    <!-- maximum length of a test input -->
+    <max_len>2000</max_len>
+    <!-- maximum total time in seconds to run the fuzzer -->
+    <max_total_time>300</max_total_time>
+    <!-- memory usage limit in Mb -->
+    <rss_limit_mb>4096</rss_limit_mb>
+  </fuzztest>
+</fuzz_config>
diff --git a/test/user_idm/fuzztest/user_idm_fuzzer/user_idm_fuzzer.cpp b/test/user_idm/fuzztest/user_idm_fuzzer/user_idm_fuzzer.cpp
new file mode 100644
index 0000000..1c15d9d
--- /dev/null
+++ b/test/user_idm/fuzztest/user_idm_fuzzer/user_idm_fuzzer.cpp
@@ -0,0 +1,258 @@
+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "user_idm_fuzzer.h"
+#include "parcel.h"
+#include "securec.h"
+#include "iam_fuzz_test.h"
+#include "useridm_service.h"
+#include "useridm_hilog_wrapper.h"
+
+
+#undef private
+
+using namespace std;
+using namespace OHOS::UserIAM::Common;
+
+namespace OHOS {
+namespace UserIAM {
+namespace UserIDM {
+namespace {
+class GetInfoCallbackFuzzer : public IRemoteStub<IGetInfoCallback> {
+public:
+    virtual ~GetInfoCallbackFuzzer() = default;
+    void OnGetInfo(std::vector<CredentialInfo> &info) override
+    {
+        USERIDM_HILOGI(MODULE_SERVICE, "GetInfoCallbackFuzzer OnGetInfo");
+        return;
+    }
+};
+
+class GetSecInfoCallbackFuzzer : public IRemoteStub<IGetSecInfoCallback> {
+public:
+    virtual ~GetSecInfoCallbackFuzzer() = default;
+    void OnGetSecInfo(SecInfo &info) override
+    {
+        USERIDM_HILOGI(MODULE_SERVICE, "GetSecInfoCallbackFuzzer OnGetSecInfo");
+        return;
+    }
+};
+
+class IdmCallbackFuzzer : public IRemoteStub<IIDMCallback> {
+public:
+    virtual ~IdmCallbackFuzzer() = default;
+    void OnResult(int32_t result, RequestResult reqRet) override
+    {
+        USERIDM_HILOGI(MODULE_SERVICE, "IdmCallbackFuzzer OnResult");
+        return;
+    }
+
+    void OnAcquireInfo(int32_t module, int32_t acquire, RequestResult reqRet) override
+    {
+        USERIDM_HILOGI(MODULE_SERVICE, "IdmCallbackFuzzer OnAcquireInfo");
+        return;
+    }
+};
+
+void FillFuzzAddCredInfo(Parcel &parcel, AddCredInfo &credInfo)
+{
+    credInfo.authType = static_cast<AuthType>(parcel.ReadUint32());
+    credInfo.authSubType = static_cast<AuthSubType>(parcel.ReadUint64());
+    FillFuzzUint8Vector(parcel, credInfo.token);
+    USERIDM_HILOGI(MODULE_SERVICE, "success");
+}
+
+UserIDMService g_userIdmService(SUBSYS_USERIAM_SYS_ABILITY_USERIDM, true);
+
+void FuzzOnStart(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    static_cast<void>(parcel);
+    g_userIdmService.OnStart();
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzOnStop(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    static_cast<void>(parcel);
+    g_userIdmService.OnStop();
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzOpenSession(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    static_cast<void>(parcel);
+    g_userIdmService.OpenSession();
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzCloseSession(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    static_cast<void>(parcel);
+    g_userIdmService.CloseSession();
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzGetAuthInfo_a(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    AuthType authType = static_cast<AuthType>(parcel.ReadUint32());
+    sptr<IGetInfoCallback> callback = nullptr;
+    if (parcel.ReadBool()) {
+        callback = new (std::nothrow) GetInfoCallbackFuzzer();
+    }
+    g_userIdmService.GetAuthInfo(authType, callback);
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzGetAuthInfo_b(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    int32_t userId = parcel.ReadInt32();
+    AuthType authType = static_cast<AuthType>(parcel.ReadUint32());
+    sptr<IGetInfoCallback> callback = nullptr;
+    if (parcel.ReadBool()) {
+        callback = new (std::nothrow) GetInfoCallbackFuzzer();
+    }
+    g_userIdmService.GetAuthInfo(userId, authType, callback);
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzGetSecInfo(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    int32_t userId = parcel.ReadInt32();
+    sptr<IGetSecInfoCallback> callback = nullptr;
+    if (parcel.ReadBool()) {
+        callback = new (std::nothrow) GetSecInfoCallbackFuzzer();
+    }
+    g_userIdmService.GetSecInfo(userId, callback);
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzAddCredential(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    AddCredInfo credInfo;
+    FillFuzzAddCredInfo(parcel, credInfo);
+    sptr<IIDMCallback> callback = nullptr;
+    if (parcel.ReadBool()) {
+        callback = new (std::nothrow) IdmCallbackFuzzer();
+    }
+    g_userIdmService.AddCredential(credInfo, callback);
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzUpdateCredential(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    AddCredInfo credInfo;
+    FillFuzzAddCredInfo(parcel, credInfo);
+    sptr<IIDMCallback> callback = nullptr;
+    if (parcel.ReadBool()) {
+        callback = new (std::nothrow) IdmCallbackFuzzer();
+    }
+    g_userIdmService.UpdateCredential(credInfo, callback);
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzCancel(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    uint64_t challenge = parcel.ReadUint64();
+    g_userIdmService.Cancel(challenge);
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzEnforceDelUser(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    uint32_t userId = parcel.ReadUint32();
+    sptr<IIDMCallback> callback = nullptr;
+    if (parcel.ReadBool()) {
+        callback = new (std::nothrow) IdmCallbackFuzzer();
+    }
+    g_userIdmService.EnforceDelUser(userId, callback);
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzDelUser(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    std::vector<uint8_t> authToken;
+    FillFuzzUint8Vector(parcel, authToken);
+    sptr<IIDMCallback> callback = nullptr;
+    if (parcel.ReadBool()) {
+        callback = new (std::nothrow) IdmCallbackFuzzer();
+    }
+    g_userIdmService.DelUser(authToken, callback);
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+void FuzzDelCred(Parcel &parcel)
+{
+    USERIDM_HILOGI(MODULE_SERVICE, "begin");
+    uint64_t credentialId = parcel.ReadUint64();
+    std::vector<uint8_t> authToken;
+    FillFuzzUint8Vector(parcel, authToken);
+    sptr<IIDMCallback> callback = nullptr;
+    if (parcel.ReadBool()) {
+        callback = new (std::nothrow) IdmCallbackFuzzer();
+    }
+    g_userIdmService.DelCred(credentialId, authToken, callback);
+    USERIDM_HILOGI(MODULE_SERVICE, "end");
+}
+
+using FuzzFunc = decltype(FuzzDelCred);
+FuzzFunc *g_fuzzFuncs[] = {
+    FuzzOnStart,
+    FuzzOnStop,
+    FuzzOpenSession,
+    FuzzCloseSession,
+    FuzzGetAuthInfo_a,
+    FuzzGetAuthInfo_b,
+    FuzzGetSecInfo,
+    FuzzAddCredential,
+    FuzzUpdateCredential,
+    FuzzCancel,
+    FuzzEnforceDelUser,
+    FuzzDelUser,
+    FuzzDelCred,
+};
+
+void UserIdmFuzzTest(const uint8_t *data, size_t size)
+{
+    Parcel parcel;
+    parcel.WriteBuffer(data, size);
+    parcel.RewindRead(0);
+    uint32_t index = parcel.ReadUint32() % (sizeof(g_fuzzFuncs) / sizeof(FuzzFunc *));
+    auto fuzzFunc = g_fuzzFuncs[index];
+    fuzzFunc(parcel);
+    return;
+}
+}
+} // namespace UserIDM
+} // namespace UserIAM
+} // namespace OHOS
+
+/* Fuzzer entry point */
+extern "C" int32_t LLVMFuzzerTestOneInput(const uint8_t *data, size_t size)
+{
+    OHOS::UserIAM::UserIDM::UserIdmFuzzTest(data, size);
+    return 0;
+}
diff --git a/test/user_idm/fuzztest/user_idm_fuzzer/user_idm_fuzzer.h b/test/user_idm/fuzztest/user_idm_fuzzer/user_idm_fuzzer.h
new file mode 100644
index 0000000..8b15753
--- /dev/null
+++ b/test/user_idm/fuzztest/user_idm_fuzzer/user_idm_fuzzer.h
@@ -0,0 +1,21 @@
+/*
+ * Copyright (c) 2022 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef USER_IDM_FUZZER_H
+#define USER_IDM_FUZZER_H
+
+#define FUZZ_PROJECT_NAME "UserIdmFuzzTest"
+
+#endif // USER_IDM_FUZZER_H