diff --git a/common/include/dm_constants.h b/common/include/dm_constants.h
index 72ee5cbc..1ef1c554 100755
--- a/common/include/dm_constants.h
+++ b/common/include/dm_constants.h
@@ -152,6 +152,7 @@ const int32_t LOCAL_CREDENTIAL_DEAL_TYPE = 1;
 const int32_t REMOTE_CREDENTIAL_DEAL_TYPE = 2;
 const int32_t NONSYMMETRY_CREDENTIAL_TYPE = 2;
 const int32_t SYMMETRY_CREDENTIAL_TYPE = 1;
+const int32_t UNKNOWN_CREDENTIAL_TYPE = 0;
 // Softbus
 const int32_t SOFTBUS_CHECK_INTERVAL = 100000; // 100ms
 const uint32_t SOFTBUS_SUBSCRIBE_ID_PREFIX_LEN = 16;
@@ -222,6 +223,7 @@ const std::string FIELD_PROCESS_TYPE = "processType";
 const std::string FIELD_AUTH_TYPE = "authType";
 const std::string FIELD_CREDENTIAL_DATA = "credentialData";
 const std::string FIELD_CREDENTIAL_ID = "credentialId";
+const std::string FIELD_PEER_CREDENTIAL_INFO = "peerCredentialInfo";
 const int32_t SAME_ACCOUNT_TYPE = 1;
 const int32_t CROSS_ACCOUNT_TYPE = 2;
 const int32_t PIN_CODE_NETWORK = 0;
diff --git a/services/implementation/include/credential/dm_credential_manager.h b/services/implementation/include/credential/dm_credential_manager.h
index 0cab7bad..845ff6bb 100644
--- a/services/implementation/include/credential/dm_credential_manager.h
+++ b/services/implementation/include/credential/dm_credential_manager.h
@@ -74,12 +74,19 @@ public:
     int32_t ImportLocalCredential(const std::string &credentialInfo);
 
     /**
-     * @tc.name: HiChainConnector::ImportRemoteCredential
+     * @tc.name: DmCredentialManager::ImportRemoteCredential
      * @tc.desc: Import Symmetry Credential Info of the DmCredential Manager
      * @tc.type: FUNC
      */
     int32_t ImportRemoteCredential(const std::string &credentialInfo);
 
+    /**
+     * @tc.name: DmCredentialManager::DeleteRemoteCredential
+     * @tc.desc: delete Symmetry Credential Info of the DmCredential Manager
+     * @tc.type: FUNC
+     */
+    int32_t DeleteRemoteCredential(const std::string &credentialInfo);
+
      /**
      * @tc.name: HiChainConnector::DeleteCredential
      * @tc.desc: Delete Credential Info of the DmCredential Manager
@@ -103,6 +110,7 @@ private:
 private:
     int32_t GetCredentialData(const std::string &credentialInfo, const CredentialData &inputCreData,
         nlohmann::json &jsonOutObj);
+    int32_t GetAddDeviceList(const nlohmann::json &jsonObject, nlohmann::json &jsonDeviceList);
 };
 } // namespace DistributedHardware
 } // namespace OHOS
diff --git a/services/implementation/include/dependency/hichain/hichain_connector.h b/services/implementation/include/dependency/hichain/hichain_connector.h
index 522f8377..d3d9213f 100644
--- a/services/implementation/include/dependency/hichain/hichain_connector.h
+++ b/services/implementation/include/dependency/hichain/hichain_connector.h
@@ -175,6 +175,20 @@ public:
      */
     int32_t getRegisterInfo(const std::string &queryParams, std::string &returnJsonStr);
 
+    /**
+     * @tc.name: HiChainConnector::addMultiMembers
+     * @tc.desc: Get RegisterInfo Info of the HiChain Connector
+     * @tc.type: FUNC
+     */
+    int32_t addMultiMembers(const int32_t groupType, const std::string &userId,
+                            const nlohmann::json &jsonDeviceList);
+    /**
+     * @tc.name: HiChainConnector::deleteMultiMembers
+     * @tc.desc: Get RegisterInfo Info of the HiChain Connector
+     * @tc.type: FUNC
+     */
+    int32_t deleteMultiMembers(const int32_t groupType, const std::string &userId,
+                            const nlohmann::json &jsonDeviceList);
 private:
     int64_t GenRequestId();
     int32_t SyncGroups(std::string deviceId, std::vector<std::string> &remoteGroupIdList);
@@ -187,7 +201,7 @@ private:
     bool IsGroupInfoInvalid(GroupInfo &group);
     int32_t GetStrFieldByType(const std::string &reqJsonStr, const std::string &outField, int32_t type);
     int32_t GetNumsFieldByType(const std::string &reqJsonStr, int32_t &outField, int32_t type);
-
+    int32_t GetGroupId(const std::string &userId, const int32_t groupType, std::string &groupId);
 private:
     const DeviceGroupManager *deviceGroupManager_ = nullptr;
     DeviceAuthCallback deviceAuthCallback_;
diff --git a/services/implementation/src/credential/dm_credential_manager.cpp b/services/implementation/src/credential/dm_credential_manager.cpp
index b6b7a3b7..b276ea20 100644
--- a/services/implementation/src/credential/dm_credential_manager.cpp
+++ b/services/implementation/src/credential/dm_credential_manager.cpp
@@ -24,6 +24,24 @@
 
 namespace OHOS {
 namespace DistributedHardware {
+struct CredentialDataInfo {
+    int32_t credentialType;
+    std::string credentailId;
+    std::string serverPk;
+    std::string pkInfoSignature;
+    std::string pkInfo;
+    std::string authCode;
+    std::string peerDeviceId;
+    std::string userId;
+    CredentialDataInfo() : credentialType(UNKNOWN_CREDENTIAL_TYPE)
+    {
+    }
+};
+
+struct PeerCredentialInfo {
+    std::string peerDeviceId;
+    std::string peerCredentialId;
+};
 void from_json(const nlohmann::json &jsonObject, CredentialData &credentialData)
 {
     if (!jsonObject.contains(FIELD_CREDENTIAL_TYPE) || !jsonObject.contains(FIELD_CREDENTIAL_ID) ||
@@ -100,7 +118,7 @@ int32_t DmCredentialManager::ImportCredential(const std::string &pkgName, const
     if (processType == LOCAL_CREDENTIAL_DEAL_TYPE) {
         return ImportLocalCredential(credentialInfo);
     } else if (processType == REMOTE_CREDENTIAL_DEAL_TYPE) {
-        return DM_OK;
+        return ImportRemoteCredential(credentialInfo);
     } else {
         LOGE("credential type error!");
     }
@@ -185,7 +203,7 @@ int32_t DmCredentialManager::DeleteCredential(const std::string &pkgName, const
     if (processType == LOCAL_CREDENTIAL_DEAL_TYPE) {
         return hiChainConnector_->DeleteGroup(requestId_, userId, authType);
     } else if (processType == REMOTE_CREDENTIAL_DEAL_TYPE) {
-        return DM_OK;
+        return DeleteRemoteCredential(deleteInfo);
     } else {
         LOGE("credential type error!");
     }
@@ -267,5 +285,193 @@ int32_t DmCredentialManager::GetCredentialData(const std::string &credentialInfo
     jsonOutObj = jsonCreObj;
     return DM_OK;
 }
+
+void from_json(const nlohmann::json &jsonObject, CredentialDataInfo &credentialDataInfo)
+{
+    if (!jsonObject.contains(FIELD_CREDENTIAL_TYPE)) {
+        LOGE("credentialType json key not exist");
+        return;
+    }
+    jsonObject[FIELD_CREDENTIAL_TYPE].get_to(credentialDataInfo.credentialType);
+    if (jsonObject.contains(FIELD_CREDENTIAL_ID)) {
+        jsonObject[FIELD_CREDENTIAL_ID].get_to(credentialDataInfo.credentailId);
+    }
+    if (credentialDataInfo.credentialType == NONSYMMETRY_CREDENTIAL_TYPE) {
+        if (jsonObject.contains(FIELD_SERVER_PK)) {
+            jsonObject[FIELD_SERVER_PK].get_to(credentialDataInfo.serverPk);
+        }
+        if (jsonObject.contains(FIELD_PKINFO_SIGNATURE)) {
+            jsonObject[FIELD_PKINFO_SIGNATURE].get_to(credentialDataInfo.pkInfoSignature);
+        }
+        if (jsonObject.contains(FIELD_PKINFO)) {
+            nlohmann::json jsonPkInfo = jsonObject[FIELD_PKINFO];
+            credentialDataInfo.pkInfo = jsonPkInfo.dump().c_str();
+        }
+    } else if (credentialDataInfo.credentialType == SYMMETRY_CREDENTIAL_TYPE) {
+        if (jsonObject.contains(FIELD_AUTH_CODE)) {
+            jsonObject[FIELD_AUTH_CODE].get_to(credentialDataInfo.authCode);
+        }
+    } else {
+        LOGE("credentialType john key is unknown");
+        return;
+    }
+    if (jsonObject.contains(FIELD_PEER_DEVICE_ID)) {
+        jsonObject[FIELD_PEER_DEVICE_ID].get_to(credentialDataInfo.peerDeviceId);
+    }
+}
+
+void to_json(nlohmann::json &jsonObject, const CredentialDataInfo &credentialDataInfo)
+{
+    jsonObject[FIELD_DEVICE_ID] = credentialDataInfo.peerDeviceId;
+    jsonObject[FIELD_UDID] =credentialDataInfo.peerDeviceId;
+    jsonObject[FIELD_USER_ID] = credentialDataInfo.userId;
+    jsonObject[FIELD_CREDENTIAL_TYPE] = credentialDataInfo.credentialType;
+    jsonObject[FIELD_CREDENTIAL_ID] = atoi(credentialDataInfo.credentailId.c_str());
+    if (credentialDataInfo.credentialType == NONSYMMETRY_CREDENTIAL_TYPE) {
+        jsonObject[FIELD_SERVER_PK] = credentialDataInfo.serverPk;
+        jsonObject[FIELD_PKINFO_SIGNATURE] = credentialDataInfo.pkInfoSignature;
+        jsonObject[FIELD_PKINFO] = credentialDataInfo.pkInfo;
+    } else if (credentialDataInfo.credentialType == SYMMETRY_CREDENTIAL_TYPE) {
+        jsonObject[FIELD_AUTH_CODE] = credentialDataInfo.authCode;
+    }
+}
+
+int32_t DmCredentialManager::GetAddDeviceList(const nlohmann::json &jsonObject, nlohmann::json &jsonDeviceList)
+{
+    if (!jsonObject.contains(FIELD_CREDENTIAL_DATA) || !jsonObject.contains(FIELD_AUTH_TYPE)) {
+        LOGE("credentaildata or authType string key not exist!");
+        return ERR_DM_FAILED;
+    }
+    nlohmann::json credentialJson = jsonObject[FIELD_CREDENTIAL_DATA];
+    auto credentialDataList = credentialJson.get<std::vector<CredentialDataInfo>>();
+    int32_t authType = jsonObject[FIELD_AUTH_TYPE];
+
+    for (auto &credentialData : credentialDataList) {
+        if (authType == SAME_ACCOUNT_TYPE) {
+            if (jsonObject.contains(FIELD_USER_ID)) {
+                credentialData.userId = jsonObject[FIELD_USER_ID];
+            }
+        } else if (authType == CROSS_ACCOUNT_TYPE) {
+            if (jsonObject.contains(FIELD_PEER_USER_ID)) {
+                credentialData.userId = jsonObject[FIELD_PEER_USER_ID];
+            }
+        }
+    }
+    for (size_t i = 0; i < credentialDataList.size(); i++) {
+        jsonDeviceList[FIELD_DEVICE_LIST][i] = credentialDataList.at(i);
+    }
+    return DM_OK;
+}
+
+int32_t DmCredentialManager::ImportRemoteCredential(const std::string &credentialInfo)
+{
+    nlohmann::json jsonObject = nlohmann::json::parse(credentialInfo, nullptr, false);
+    if (jsonObject.is_discarded()) {
+        LOGE("credentialInfo string not a json type.");
+        return ERR_DM_FAILED;
+    }
+    if (!jsonObject.contains(FIELD_AUTH_TYPE) || !jsonObject.contains(FIELD_CREDENTIAL_DATA)) {
+        LOGE("auth type, credentialData string key not exist!");
+        return ERR_DM_FAILED;
+    }
+    int32_t authType = jsonObject[FIELD_AUTH_TYPE];
+    std::string userId;
+    int32_t groupType = 0;
+    if (authType == SAME_ACCOUNT_TYPE) {
+        groupType = IDENTICAL_ACCOUNT_GROUP;
+        if (!jsonObject.contains(FIELD_USER_ID)) {
+            LOGE("userId string key not exist!");
+            return ERR_DM_FAILED;
+        } else {
+            userId = jsonObject[FIELD_USER_ID];
+        }
+    } else if (authType == CROSS_ACCOUNT_TYPE) {
+        groupType = ACROSS_ACCOUNT_AUTHORIZE_GROUP;
+        if (!jsonObject.contains(FIELD_PEER_USER_ID)) {
+            LOGE("peerUserId string key not exist!");
+            return ERR_DM_FAILED;
+        } else {
+            userId = jsonObject[FIELD_PEER_USER_ID];
+        }
+    }
+    nlohmann::json jsonDeviceList;
+    if (GetAddDeviceList(jsonObject, jsonDeviceList) != DM_OK) {
+        LOGE("failed to get add DeviceList.");
+        return ERR_DM_FAILED;
+    }
+    if (hiChainConnector_->addMultiMembers(groupType, userId, jsonDeviceList) != DM_OK) {
+        LOGE("failed to add members to group.");
+        return ERR_DM_FAILED;
+    }
+    return DM_OK;
+}
+
+void from_json(const nlohmann::json &jsonObject, PeerCredentialInfo &peerCredentialInfo)
+{
+    if (jsonObject.contains(FIELD_PEER_USER_ID)) {
+        jsonObject[FIELD_PEER_USER_ID].get_to(peerCredentialInfo.peerDeviceId);
+    }
+}
+
+void to_json(nlohmann::json &jsonObject, const PeerCredentialInfo &peerCredentialInfo)
+{
+    jsonObject[FIELD_DEVICE_ID] = peerCredentialInfo.peerDeviceId;
+}
+
+int32_t GetDeleteDeviceList(const nlohmann::json &jsonObject, nlohmann::json &deviceList)
+{
+    if (!jsonObject.contains(FIELD_PEER_CREDENTIAL_INFO)) {
+        LOGE("devicelist string key not exist!");
+        return ERR_DM_FAILED;
+    }
+    auto peerCredentialInfo = jsonObject[FIELD_PEER_CREDENTIAL_INFO].get<std::vector<PeerCredentialInfo>>();
+    for (size_t i = 0; i < peerCredentialInfo.size(); i++) {
+        deviceList[FIELD_DEVICE_LIST][i] = peerCredentialInfo[i];
+    }
+    return DM_OK;
+}
+
+int32_t DmCredentialManager::DeleteRemoteCredential(const std::string &deleteInfo)
+{
+    nlohmann::json jsonObject = nlohmann::json::parse(deleteInfo, nullptr, false);
+    if (jsonObject.is_discarded()) {
+        LOGE("credentialInfo string not a json type.");
+        return ERR_DM_FAILED;
+    }
+    if (!jsonObject.contains(FIELD_AUTH_TYPE) || !jsonObject.contains(FIELD_PEER_CREDENTIAL_INFO)) {
+        LOGE("authType, peerCredential or peerUserId string key not exist!");
+        return ERR_DM_FAILED;
+    }
+    int32_t authType = jsonObject[FIELD_AUTH_TYPE];
+    std::string userId;
+    int32_t groupType = 0;
+    if (authType == SAME_ACCOUNT_TYPE) {
+        if (!jsonObject.contains(FIELD_USER_ID)) {
+            LOGE("userId string key not exist.");
+            return ERR_DM_FAILED;
+        } else {
+            userId = jsonObject[FIELD_USER_ID];
+        }
+        groupType = IDENTICAL_ACCOUNT_GROUP;
+    } else if (authType == CROSS_ACCOUNT_TYPE) {
+        if (!jsonObject.contains(FIELD_PEER_USER_ID)) {
+            LOGE("peerUserId string key not exist.");
+            return ERR_DM_FAILED;
+        } else {
+            userId = jsonObject[FIELD_PEER_USER_ID];
+        }
+        groupType = ACROSS_ACCOUNT_AUTHORIZE_GROUP;
+    }
+    nlohmann::json jsonDeviceList;
+    if (GetDeleteDeviceList(jsonObject, jsonDeviceList) != DM_OK) {
+        LOGE("failed to get delete DeviceList.");
+        return ERR_DM_FAILED;
+    }
+    if (hiChainConnector_->deleteMultiMembers(groupType, userId, jsonDeviceList) != DM_OK) {
+        LOGE("failed to delete members from group.");
+        return ERR_DM_FAILED;
+    }
+    return DM_OK;
+}
 } // namespace DistributedHardware
 } // namespace OHOS
diff --git a/services/implementation/src/dependency/hichain/hichain_connector.cpp b/services/implementation/src/dependency/hichain/hichain_connector.cpp
index 9be5f55c..c84baca0 100644
--- a/services/implementation/src/dependency/hichain/hichain_connector.cpp
+++ b/services/implementation/src/dependency/hichain/hichain_connector.cpp
@@ -753,5 +753,98 @@ int32_t HiChainConnector::getRegisterInfo(const std::string &queryParams, std::s
     LOGI("request hichain device registerinfo successfully.");
     return DM_OK;
 }
+
+int32_t HiChainConnector::GetGroupId(const std::string &userId, const int32_t groupType, std::string &groupId)
+{
+    nlohmann::json jsonObjGroup;
+    jsonObjGroup[FIELD_GROUP_TYPE] = groupType;
+    std::string queryParams = jsonObjGroup.dump();
+    std::vector<GroupInfo> groupList;
+
+    if (!GetGroupInfo(queryParams.c_str(), groupList)) {
+        LOGE("failed to get device join groups");
+        return ERR_DM_FAILED;
+    }
+    for (auto &groupinfo : groupList) {
+        LOGI("groupinfo.groupId:%s", groupinfo.groupId.c_str());
+        if (groupinfo.userId == userId) {
+            groupId = groupinfo.groupId;
+            break;
+        }
+    }
+    return DM_OK;
+}
+
+int32_t HiChainConnector::addMultiMembers(const int32_t groupType, const std::string &userId,
+    const nlohmann::json &jsonDeviceList)
+{
+    if (deviceGroupManager_ == nullptr) {
+        LOGE("HiChainConnector::deviceGroupManager_ is nullptr.");
+        return ERR_DM_INPUT_PARAMETER_EMPTY;
+    }
+    if (userId.empty() || !jsonDeviceList.contains(FIELD_DEVICE_LIST)) {
+        LOGE("userId or deviceList is empty");
+        return ERR_DM_INPUT_PARAMETER_EMPTY;
+    }
+    std::string groupId;
+    if (GetGroupId(userId, groupType, groupId) != DM_OK) {
+        LOGE("failed to get groupid");
+        return ERR_DM_FAILED;
+    }
+    std::string appId = DM_PKG_NAME;
+    nlohmann::json jsonObj;
+    jsonObj[FIELD_GROUP_ID] = groupId;
+    jsonObj[FIELD_GROUP_TYPE] = groupType;
+    jsonObj[FIELD_DEVICE_LIST] = jsonDeviceList[FIELD_DEVICE_LIST];
+    std::string addParams = jsonObj.dump();
+    int32_t osAccountUserId = MultipleUserConnector::GetCurrentAccountUserID();
+    if (osAccountUserId < 0) {
+        LOGE("get current process account user id failed");
+        return ERR_DM_FAILED;
+    }
+    int32_t ret = deviceGroupManager_->addMultiMembersToGroup(osAccountUserId,
+        appId.c_str(), addParams.c_str());
+    if (ret!= DM_OK) {
+        LOGE("HiChainConnector::addMultiMemberstoGroup failure! ret=%d", ret);
+        return ret;
+    }
+    return DM_OK;
+}
+
+int32_t HiChainConnector::deleteMultiMembers(const int32_t groupType, const std::string &userId,
+    const nlohmann::json &jsonDeviceList)
+{
+    if (deviceGroupManager_ == nullptr) {
+        LOGE("HiChainConnector::deviceGroupManager_ is nullptr.");
+        return ERR_DM_INPUT_PARAMETER_EMPTY;
+    }
+    if (userId.empty() || !jsonDeviceList.contains(FIELD_DEVICE_LIST)) {
+        LOGE("jsonDeviceList userId or deleteInfo string is empty");
+        return ERR_DM_INPUT_PARAMETER_EMPTY;
+    }
+    std::string groupId;
+    if (GetGroupId(userId, groupType, groupId) != DM_OK) {
+        LOGE("failed to get groupid");
+        return ERR_DM_FAILED;
+    }
+    std::string appId = DM_PKG_NAME;
+    nlohmann::json jsonObj;
+    jsonObj[FIELD_GROUP_ID] = groupId;
+    jsonObj[FIELD_GROUP_TYPE] = groupType;
+    jsonObj[FIELD_DEVICE_LIST] = jsonDeviceList[FIELD_DEVICE_LIST];
+    std::string deleteParams = jsonObj.dump();
+    int32_t osAccountUserId = MultipleUserConnector::GetCurrentAccountUserID();
+    if (osAccountUserId < 0) {
+        LOGE("get current process account user id failed");
+        return ERR_DM_FAILED;
+    }
+    int32_t ret = deviceGroupManager_->delMultiMembersFromGroup(osAccountUserId,
+        appId.c_str(), deleteParams.c_str());
+    if (ret != DM_OK) {
+        LOGE("HiChainConnector::deleteMultiMembers failure!, ret=%d", ret);
+        return ret;
+    }
+    return DM_OK;
+}
 } // namespace DistributedHardware
 } // namespace OHOS
diff --git a/test/unittest/mock/device_auth.h b/test/unittest/mock/device_auth.h
index 5ca6d5c5..3d1a6a44 100644
--- a/test/unittest/mock/device_auth.h
+++ b/test/unittest/mock/device_auth.h
@@ -67,6 +67,7 @@
 #define FIELD_IS_DELETE_ALL "isDeleteAll"
 #define FIELD_BLE_CHALLENGE "bleChallenge"
 #define FIELD_OS_ACCOUNT_ID "osAccountId"
+#define FIELD_DEVICE_LIST "deviceList"
 
 using OsAccountEnum = enum _OsAccountEnum : int32_t {
     DEFAULT_OS_ACCOUNT = 0,
@@ -167,6 +168,8 @@ using DeviceGroupManager = struct _DeviceGroupManager {
     int32_t (*deleteMemberFromGroup)(int32_t osAccountId, int64_t requestId, const char *appId,
         const char *deleteParams);
     int32_t (*processData)(int64_t requestId, const uint8_t *data, uint32_t dataLen);
+    int32_t (*addMultiMembersToGroup)(int32_t osAccountId, const char *appId, const char *addParams);
+    int32_t (*delMultiMembersFromGroup)(int32_t osAccountId, const char *appId, const char *deleteParams);
     int32_t (*confirmRequest)(int32_t osAccountId, int64_t requestId, const char *appId, const char *confirmParams);
     int32_t (*bindPeer)(int64_t requestId, const char *appId, const char *bindParams);
     int32_t (*unbindPeer)(int64_t requestId, const char *appId, const char *unbindParams);