diff --git a/ext/pin_auth/src/ability/standard/dm_ability_manager.cpp b/ext/pin_auth/src/ability/standard/dm_ability_manager.cpp
index e2b026f1cab3f551dab8d12e5f645c5b8ad9a237..b1ea6b992a7f88591f169e9e1a41be49fa5504f1 100644
--- a/ext/pin_auth/src/ability/standard/dm_ability_manager.cpp
+++ b/ext/pin_auth/src/ability/standard/dm_ability_manager.cpp
@@ -61,7 +61,7 @@ void DmAbilityManager::waitForTimeout(uint32_t timeout_s)
 {
     struct timespec ts;
     clock_gettime(CLOCK_REALTIME, &ts);
-    ts.tv_sec += timeout_s;
+    ts.tv_sec += (int32_t)timeout_s;
     sem_timedwait(&mSem_, &ts);
 }
 
diff --git a/ext/profile/src/profile_connector.cpp b/ext/profile/src/profile_connector.cpp
index 4a709238e404ab155ff1e7d537371a2366b1fa5e..fe46916b15043b67905847bf773f98aaa22a6b7d 100644
--- a/ext/profile/src/profile_connector.cpp
+++ b/ext/profile/src/profile_connector.cpp
@@ -53,7 +53,7 @@ int32_t ProfileConnector::SubscribeProfileEvents(const std::list<std::string> &s
     subscribeInfos.emplace_back(eventSync);
 
     std::list<ProfileEvent> failedEvents;
-    u_int32_t errCode = DistributedDeviceProfileClient::GetInstance().SubscribeProfileEvents(
+    int32_t errCode = DistributedDeviceProfileClient::GetInstance().SubscribeProfileEvents(
         subscribeInfos, profileEventCallback_, failedEvents);
     LOGI("ProfileConnector::SubscribeProfileEvents result=%d", errCode);
     return DM_OK;
@@ -65,7 +65,7 @@ int32_t ProfileConnector::UnSubscribeProfileEvents()
     profileEvents.emplace_back(ProfileEvent::EVENT_PROFILE_CHANGED);
     profileEvents.emplace_back(ProfileEvent::EVENT_SYNC_COMPLETED);
     std::list<ProfileEvent> failedEvents;
-    u_int32_t errCode = DistributedDeviceProfileClient::GetInstance().UnsubscribeProfileEvents(
+    int32_t errCode = DistributedDeviceProfileClient::GetInstance().UnsubscribeProfileEvents(
         profileEvents, profileEventCallback_, failedEvents);
     LOGI("ProfileConnector::UnSubscribeProfileEvents result=%d", errCode);
     return DM_OK;
@@ -100,4 +100,4 @@ void ProfileEventCallback::OnSyncCompleted(const SyncResult &syncResults)
     }
 }
 } // namespace DistributedHardware
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/interfaces/inner_kits/native_cpp/include/dm_app_image_info.h b/interfaces/inner_kits/native_cpp/include/dm_app_image_info.h
index 1f48f40b65781502729173707316cd28a701ae97..26475008b4e014f07a2aeaa8f5e0ea18610be33d 100644
--- a/interfaces/inner_kits/native_cpp/include/dm_app_image_info.h
+++ b/interfaces/inner_kits/native_cpp/include/dm_app_image_info.h
@@ -68,7 +68,7 @@ public:
             return -1;
         }
 
-        if (memcpy_s(appThumbnail + copyIndex, appThumbnailLen - copyIndex, srcBuffer, copyLen) != 0) {
+        if (memcpy_s(appThumbnail + copyIndex, appThumbnailLen - copyIndex, srcBuffer, (uint32_t)copyLen) != 0) {
             return -1;
         }
 
@@ -145,7 +145,7 @@ private:
             }
             if (appIcon != nullptr) {
                 appIconLen = appIconLen_;
-                if (memcpy_s(appIcon, appIconLen, appIcon_, appIconLen_) != 0) {
+                if (memcpy_s(appIcon, (uint32_t)appIconLen, appIcon_, appIconLen_) != 0) {
                     return;
                 }
             }
@@ -165,7 +165,7 @@ private:
             }
             if (appThumbnail != nullptr) {
                 appThumbnailLen = appThumbnailLen_;
-                if (memcpy_s(appThumbnail, appThumbnailLen, appThumbnail_, appThumbnailLen_) != 0) {
+                if (memcpy_s(appThumbnail, (uint32_t)appThumbnailLen, appThumbnail_, appThumbnailLen_) != 0) {
                     return;
                 }
             }
diff --git a/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_client_server_proxy.cpp b/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_client_server_proxy.cpp
index 0a8e9304041149f0c8abb62fc799d1abe69b9780..c81222fb8eb66db6633a35cc25a19db4ef250579 100644
--- a/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_client_server_proxy.cpp
+++ b/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_client_server_proxy.cpp
@@ -36,7 +36,7 @@ int32_t IpcClientServerProxy::SendCmd(int32_t cmdCode, std::shared_ptr<IpcReq> r
     if (IpcCmdRegister::GetInstance().SetRequest(cmdCode, req, data) != DM_OK) {
         return DM_IPC_SEND_REQUEST_FAILED;
     }
-    if (remote->SendRequest(cmdCode, data, reply, option) != DM_OK) {
+    if (remote->SendRequest((uint32_t)cmdCode, data, reply, option) != DM_OK) {
         LOGE("SendRequest fail, cmd:%d", cmdCode);
         return DM_IPC_SEND_REQUEST_FAILED;
     }
diff --git a/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_client_stub.cpp b/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_client_stub.cpp
index 798e5f36128e5eadba41f32a1b884a6881e1f450..9cacbbf9c2fcbbb0628b6b6cffc9bd08ce0d9670 100644
--- a/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_client_stub.cpp
+++ b/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_client_stub.cpp
@@ -26,7 +26,7 @@ namespace DistributedHardware {
 int32_t IpcClientStub::OnRemoteRequest(uint32_t code, MessageParcel &data, MessageParcel &reply, MessageOption &option)
 {
     LOGI("code = %d, flags= %d.", code, option.GetFlags());
-    if (IpcCmdRegister::GetInstance().OnIpcCmd(code, data, reply) == DM_OK) {
+    if (IpcCmdRegister::GetInstance().OnIpcCmd((int32_t)code, data, reply) == DM_OK) {
         LOGE("on ipc cmd success");
         return DM_OK;
     }
diff --git a/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_cmd_parser.cpp b/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_cmd_parser.cpp
index be759e55e1057e56de3f5f2561f2fa21f8947279..5858e834d138221856836682dbd64de3623ada4e 100644
--- a/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_cmd_parser.cpp
+++ b/interfaces/inner_kits/native_cpp/src/ipc/standard/ipc_cmd_parser.cpp
@@ -101,7 +101,7 @@ ON_IPC_READ_RESPONSE(GET_TRUST_DEVICE_LIST, MessageParcel &reply, std::shared_pt
         DmDeviceInfo *pDmDeviceinfo = nullptr;
         for (int32_t i = 0; i < deviceNum; ++i) {
             pDmDeviceinfo = nullptr;
-            pDmDeviceinfo = (DmDeviceInfo *)reply.ReadRawData((int32_t)sizeof(DmDeviceInfo));
+            pDmDeviceinfo = (DmDeviceInfo *)reply.ReadRawData(sizeof(DmDeviceInfo));
             if (pDmDeviceinfo == nullptr) {
                 LOGE("GetTrustedDeviceList read node info failed!");
                 pRsp->SetErrCode(DM_IPC_TRANSACTION_FAILED);
@@ -212,7 +212,7 @@ ON_IPC_SET_REQUEST(STOP_DEVICE_DISCOVER, std::shared_ptr<IpcReq> pBaseReq, Messa
         LOGE("write pkgName failed");
         return DM_IPC_FLATTEN_OBJECT;
     }
-    if (!data.WriteInt16(subscribeId)) {
+    if (!data.WriteInt16((int16_t)subscribeId)) {
         LOGE("write subscribeId failed");
         return DM_IPC_FLATTEN_OBJECT;
     }
@@ -384,7 +384,7 @@ ON_IPC_CMD(SERVER_DEVICE_STATE_NOTIFY, MessageParcel &data, MessageParcel &reply
 ON_IPC_CMD(SERVER_DEVICE_FOUND, MessageParcel &data, MessageParcel &reply)
 {
     std::string pkgName = data.ReadString();
-    uint16_t subscribeId = data.ReadInt16();
+    int16_t subscribeId = data.ReadInt16();
     DmDeviceInfo dmDeviceInfo;
     size_t deviceSize = sizeof(DmDeviceInfo);
     void *deviceInfo = (void *)data.ReadRawData(deviceSize);
@@ -400,7 +400,7 @@ ON_IPC_CMD(SERVER_DEVICE_FOUND, MessageParcel &data, MessageParcel &reply)
 ON_IPC_CMD(SERVER_DISCOVER_FINISH, MessageParcel &data, MessageParcel &reply)
 {
     std::string pkgName = data.ReadString();
-    uint16_t subscribeId = data.ReadInt16();
+    int16_t subscribeId = data.ReadInt16();
     int32_t failedReason = data.ReadInt32();
 
     if (failedReason == DM_OK) {
@@ -419,7 +419,7 @@ ON_IPC_CMD(SERVER_AUTH_RESULT, MessageParcel &data, MessageParcel &reply)
     std::string token = data.ReadString();
     int32_t status = data.ReadInt32();
     int32_t reason = data.ReadInt32();
-    DeviceManagerNotify::GetInstance().OnAuthResult(pkgName, deviceId, token, status, reason);
+    DeviceManagerNotify::GetInstance().OnAuthResult(pkgName, deviceId, token, (uint32_t)status, reason);
     reply.WriteInt32(DM_OK);
     return DM_OK;
 }
diff --git a/interfaces/inner_kits/native_cpp/src/notify/device_manager_notify.cpp b/interfaces/inner_kits/native_cpp/src/notify/device_manager_notify.cpp
index 987ca17c59d945707a9b04cebe7f114c6cb8f810..9d68e364fe5bc24852ebf5b925a5963f56a94b6b 100644
--- a/interfaces/inner_kits/native_cpp/src/notify/device_manager_notify.cpp
+++ b/interfaces/inner_kits/native_cpp/src/notify/device_manager_notify.cpp
@@ -250,7 +250,7 @@ void DeviceManagerNotify::OnAuthResult(const std::string &pkgName, const std::st
         LOGE("DeviceManager OnAuthResult: no register authCallback for deviceID ");
         return;
     }
-    iter->second->OnAuthResult(deviceId, token, status, reason);
+    iter->second->OnAuthResult(deviceId, token, status, (int32_t)reason);
     authenticateCallback_[pkgName].erase(deviceId);
     if (authenticateCallback_[pkgName].empty()) {
         authenticateCallback_.erase(pkgName);
diff --git a/interfaces/kits/js/src/native_devicemanager_js.cpp b/interfaces/kits/js/src/native_devicemanager_js.cpp
index bb96c37a7044c5a55a282bc3077f4f9ed3ee30f6..644386adf99511a04928c0371fd5ddd949158b53 100644
--- a/interfaces/kits/js/src/native_devicemanager_js.cpp
+++ b/interfaces/kits/js/src/native_devicemanager_js.cpp
@@ -725,7 +725,7 @@ void DeviceManagerNapi::JsToDmBuffer(const napi_env &env, const napi_value &obje
         *bufferPtr = nullptr;
         return;
     }
-    bufferLen = length;
+    bufferLen = (int32_t)length;
 }
 
 void DeviceManagerNapi::JsToJsonObject(const napi_env &env, const napi_value &object, const std::string &fieldStr,
@@ -971,7 +971,7 @@ void DeviceManagerNapi::CallGetTrustedDeviceListStatusSync(napi_env env, napi_st
                 LOGE("napi_create_array fail");
             }
             for (unsigned int i = 0; i != deviceInfoAsyncCallbackInfo->devList.size(); ++i) {
-                DeviceInfoToJsArray(env, deviceInfoAsyncCallbackInfo->devList, i, array[1]);
+                DeviceInfoToJsArray(env, deviceInfoAsyncCallbackInfo->devList, (int32_t)i, array[1]);
             }
             napi_resolve_deferred(env, deviceInfoAsyncCallbackInfo->deferred, array[1]);
             LOGE("devList is OK");
@@ -1045,7 +1045,7 @@ void DeviceManagerNapi::CallGetTrustedDeviceListStatus(napi_env env, napi_status
                 LOGE("napi_create_array fail");
             }
 
-            for (size_t i = 0; i != deviceInfoAsyncCallbackInfo->devList.size(); ++i) {
+            for (int32_t i = 0; i != deviceInfoAsyncCallbackInfo->devList.size(); ++i) {
                 DeviceInfoToJsArray(env, deviceInfoAsyncCallbackInfo->devList, i, array[1]);
             }
             LOGE("devList is OK");
@@ -1252,7 +1252,7 @@ napi_value DeviceManagerNapi::GetTrustedDeviceListSync(napi_env env, napi_callba
     LOGI("DeviceManager::GetTrustedDeviceListSync");
     if (devList.size() > 0) {
         for (size_t i = 0; i != devList.size(); ++i) {
-            DeviceInfoToJsArray(env, devList, i, result);
+            DeviceInfoToJsArray(env, devList, (int32_t)i, result);
         }
     }
     return result;
@@ -1685,7 +1685,7 @@ napi_value DeviceManagerNapi::ReleaseDeviceManager(napi_env env, napi_callback_i
     int32_t ret = DeviceManager::GetInstance().UnInitDeviceManager(deviceManagerWrapper->bundleName_);
     if (ret != 0) {
         LOGE("ReleaseDeviceManager for bunderName %s failed, ret %d", deviceManagerWrapper->bundleName_.c_str(), ret);
-        napi_create_uint32(env, ret, &result);
+        napi_create_uint32(env, (uint32_t)ret, &result);
         return result;
     }
 
diff --git a/services/devicemanagerservice/src/authentication/auth_message_processor.cpp b/services/devicemanagerservice/src/authentication/auth_message_processor.cpp
index 9ba556f4a188c3e4bf57fd6ff8f48da531b2ad7a..922c5cdfc4747ae13e083e3c9f9f8d44e31baccc 100644
--- a/services/devicemanagerservice/src/authentication/auth_message_processor.cpp
+++ b/services/devicemanagerservice/src/authentication/auth_message_processor.cpp
@@ -35,7 +35,7 @@ std::vector<std::string> AuthMessageProcessor::CreateAuthRequestMessage()
 {
     LOGI("AuthMessageProcessor::CreateAuthRequestMessage start.");
     std::vector<std::string> jsonStrVec;
-    int32_t thumbnailSize = authRequestContext_->appThumbnail.size();
+    int32_t thumbnailSize = (int32_t)(authRequestContext_->appThumbnail.size());
     int32_t thumbnailSlice = ((thumbnailSize / MSG_MAX_SIZE) + (thumbnailSize % MSG_MAX_SIZE) == 0 ? 0 : 1);
     nlohmann::json jsonObj;
     jsonObj[TAG_VER] = DM_ITF_VER;
@@ -69,7 +69,7 @@ std::vector<std::string> AuthMessageProcessor::CreateAuthRequestMessage()
 
         int32_t leftLen = thumbnailSize - idx * MSG_MAX_SIZE;
         int32_t sliceLen = (leftLen > MSG_MAX_SIZE) ? MSG_MAX_SIZE : leftLen;
-        LOGI("TAG_APP_THUMBNAIL encode, idx %d, sliceLen %d, thumbnailSize %d", idx, sliceLen, thumbnailSize);
+        LOGI("TAG_APP_THUMBNAIL encode, idx %d, sliceLen %d, thumbnailSize %d", idx, (uint32_t)sliceLen, thumbnailSize);
         jsonObj[TAG_APP_THUMBNAIL] = authRequestContext_->appThumbnail.substr(idx * MSG_MAX_SIZE, sliceLen);
         jsonStrVec.push_back(jsonThumbnailObj.dump());
     }
@@ -289,4 +289,4 @@ std::shared_ptr<DmAuthRequestContext> AuthMessageProcessor::GetRequestContext()
     return authRequestContext_;
 }
 } // namespace DistributedHardware
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/services/devicemanagerservice/src/device_manager_service_listener.cpp b/services/devicemanagerservice/src/device_manager_service_listener.cpp
index c67191a3e23b33d5aba67b98ab756b07663d5893..108fefb2e8502b949ed7d29307fbeab8c26479a1 100644
--- a/services/devicemanagerservice/src/device_manager_service_listener.cpp
+++ b/services/devicemanagerservice/src/device_manager_service_listener.cpp
@@ -72,7 +72,7 @@ void DeviceManagerServiceListener::OnDiscoverySuccess(const std::string &pkgName
     std::shared_ptr<IpcRsp> pRsp = std::make_shared<IpcRsp>();
 
     pReq->SetPkgName(pkgName);
-    pReq->SetSubscribeId(subscribeId);
+    pReq->SetSubscribeId((uint16_t)subscribeId);
     pReq->SetResult(DM_OK);
     ipcServerListener_.SendRequest(SERVER_DISCOVER_FINISH, pReq, pRsp);
 }
diff --git a/services/devicemanagerservice/src/discovery/dm_discovery_manager.cpp b/services/devicemanagerservice/src/discovery/dm_discovery_manager.cpp
index f48689431b9de61d7542b476b8ee9910f766459d..a3a6663d186954b4302db5de3501ea2742139492 100644
--- a/services/devicemanagerservice/src/discovery/dm_discovery_manager.cpp
+++ b/services/devicemanagerservice/src/discovery/dm_discovery_manager.cpp
@@ -98,14 +98,14 @@ void DmDiscoveryManager::OnDeviceFound(const std::string &pkgName, const DmDevic
 void DmDiscoveryManager::OnDiscoveryFailed(const std::string &pkgName, int32_t subscribeId, int32_t failedReason)
 {
     LOGI("DmDiscoveryManager::OnDiscoveryFailed subscribeId=%d reason=%d", subscribeId, failedReason);
-    StopDeviceDiscovery(pkgName, subscribeId);
-    listener_->OnDiscoveryFailed(pkgName, subscribeId, failedReason);
+    StopDeviceDiscovery(pkgName, (uint32_t)subscribeId);
+    listener_->OnDiscoveryFailed(pkgName, (uint32_t)subscribeId, failedReason);
 }
 
 void DmDiscoveryManager::OnDiscoverySuccess(const std::string &pkgName, int32_t subscribeId)
 {
     LOGI("DmDiscoveryManager::OnDiscoverySuccess subscribeId=%d", subscribeId);
-    discoveryContextMap_[pkgName].subscribeId = subscribeId;
+    discoveryContextMap_[pkgName].subscribeId = (uint32_t)subscribeId;
     listener_->OnDiscoverySuccess(pkgName, subscribeId);
 }
 
diff --git a/services/devicemanagerservice/src/ipc/standard/ipc_cmd_parser.cpp b/services/devicemanagerservice/src/ipc/standard/ipc_cmd_parser.cpp
index 2a61266b53f6988a4c8f1df2a628f3bd1d931ed2..d5da15591b08205a2b46f362287a4f307190df71 100644
--- a/services/devicemanagerservice/src/ipc/standard/ipc_cmd_parser.cpp
+++ b/services/devicemanagerservice/src/ipc/standard/ipc_cmd_parser.cpp
@@ -68,7 +68,7 @@ ON_IPC_SET_REQUEST(SERVER_DEVICE_FOUND, std::shared_ptr<IpcReq> pBaseReq, Messag
         LOGE("write pkgName failed");
         return DM_FLATTEN_OBJECT;
     }
-    if (!data.WriteInt16(subscribeId)) {
+    if (!data.WriteInt16((int16_t)subscribeId)) {
         LOGE("write subscribeId failed");
         return DM_FLATTEN_OBJECT;
     }
@@ -95,7 +95,7 @@ ON_IPC_SET_REQUEST(SERVER_DISCOVER_FINISH, std::shared_ptr<IpcReq> pBaseReq, Mes
         LOGE("write pkgName failed");
         return DM_FLATTEN_OBJECT;
     }
-    if (!data.WriteInt16(subscribeId)) {
+    if (!data.WriteInt16((int16_t)subscribeId)) {
         LOGE("write subscribeId failed");
         return DM_FLATTEN_OBJECT;
     }
@@ -211,7 +211,7 @@ ON_IPC_CMD(GET_TRUST_DEVICE_LIST, MessageParcel &data, MessageParcel &reply)
     LOGI("pkgName:%s, extra:%s", pkgName.c_str(), extra.c_str());
     std::vector<DmDeviceInfo> deviceList;
     int32_t result = DeviceManagerService::GetInstance().GetTrustedDeviceList(pkgName, extra, deviceList);
-    int32_t infoNum = deviceList.size();
+    int32_t infoNum =(int32_t)(deviceList.size());
     DmDeviceInfo deviceInfo;
     if (!reply.WriteInt32(infoNum)) {
         LOGE("write infoNum failed");
@@ -280,7 +280,7 @@ ON_IPC_CMD(START_DEVICE_DISCOVER, MessageParcel &data, MessageParcel &reply)
 ON_IPC_CMD(STOP_DEVICE_DISCOVER, MessageParcel &data, MessageParcel &reply)
 {
     std::string pkgName = data.ReadString();
-    uint16_t subscribeId = data.ReadInt32();
+    uint16_t subscribeId = (uint16_t)(data.ReadInt32());
     LOGI("pkgName:%s, subscribeId: %d", pkgName.c_str(), subscribeId);
     int32_t result = DeviceManagerService::GetInstance().StopDeviceDiscovery(pkgName, subscribeId);
     if (!reply.WriteInt32(result)) {
@@ -394,7 +394,7 @@ ON_IPC_CMD(SERVER_GET_DMFA_INFO, MessageParcel &data, MessageParcel &reply)
     int32_t ret = DM_OK;
     ret = DeviceManagerService::GetInstance().GetFaParam(packName, authParam);
     int32_t appIconLen = authParam.imageinfo.GetAppIconLen();
-    int32_t appThumbnailLen = authParam.imageinfo.GetAppThumbnailLen();
+    uint32_t appThumbnailLen = authParam.imageinfo.GetAppThumbnailLen();
 
     if (!reply.WriteInt32(authParam.direction) || !reply.WriteInt32(authParam.authType) ||
         !reply.WriteString(authParam.authToken) || !reply.WriteString(authParam.packageName) ||
diff --git a/services/devicemanagerservice/src/ipc/standard/ipc_server_client_proxy.cpp b/services/devicemanagerservice/src/ipc/standard/ipc_server_client_proxy.cpp
index 28dbc5a5fdfcb834f934aa586cb783d97ac4d707..fd6adb81556cd42a89ad177792841b8fa1a27f82 100644
--- a/services/devicemanagerservice/src/ipc/standard/ipc_server_client_proxy.cpp
+++ b/services/devicemanagerservice/src/ipc/standard/ipc_server_client_proxy.cpp
@@ -36,7 +36,7 @@ int32_t IpcServerClientProxy::SendCmd(int32_t cmdCode, std::shared_ptr<IpcReq> r
     if (IpcCmdRegister::GetInstance().SetRequest(cmdCode, req, data) != DM_OK) {
         return DM_IPC_FAILED;
     }
-    if (remote->SendRequest(cmdCode, data, reply, option) != DM_OK) {
+    if (remote->SendRequest((uint32_t)cmdCode, data, reply, option) != DM_OK) {
         LOGE("SendRequest fail, cmd:%d", cmdCode);
         return DM_IPC_FAILED;
     }
diff --git a/services/devicemanagerservice/src/ipc/standard/ipc_server_stub.cpp b/services/devicemanagerservice/src/ipc/standard/ipc_server_stub.cpp
index ff7e3a14886a0b544c8234831e4f51adef54a387..a20ed41098730de36c3d605e8df187d564d1a33e 100644
--- a/services/devicemanagerservice/src/ipc/standard/ipc_server_stub.cpp
+++ b/services/devicemanagerservice/src/ipc/standard/ipc_server_stub.cpp
@@ -82,7 +82,7 @@ int32_t IpcServerStub::OnRemoteRequest(uint32_t code, MessageParcel &data, Messa
 {
     LOGI("code = %d, flags= %d.", code, option.GetFlags());
     int32_t ret = DM_OK;
-    ret = IpcCmdRegister::GetInstance().OnIpcCmd(code, data, reply);
+    ret = IpcCmdRegister::GetInstance().OnIpcCmd((int32_t)code, data, reply);
     if (ret == DM_IPC_NOT_REGISTER_FUNC) {
         LOGW("unsupport code: %d", code);
         return IPCObjectStub::OnRemoteRequest(code, data, reply, option);
diff --git a/test/unittest/UTTest_dm_device_state_manager.cpp b/test/unittest/UTTest_dm_device_state_manager.cpp
index 507cdca5d066332d489fb0997d800cd881ce6b0e..52e341847fe8cedbc26af61351bed556ef20af75 100644
--- a/test/unittest/UTTest_dm_device_state_manager.cpp
+++ b/test/unittest/UTTest_dm_device_state_manager.cpp
@@ -205,4 +205,4 @@ HWTEST_F(DmDeviceStateManagerTest, RegisterSoftbusStateCallback_001, testing::ex
 }
 } // namespace
 } // namespace DistributedHardware
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/test/unittest/UTTest_dm_discovery_manager.cpp b/test/unittest/UTTest_dm_discovery_manager.cpp
index 03fff20ce718c6046f9610262fad6b5fa17f0f8a..088a392d8f2c0c9e7c3e119cb36a7a2815765165 100644
--- a/test/unittest/UTTest_dm_discovery_manager.cpp
+++ b/test/unittest/UTTest_dm_discovery_manager.cpp
@@ -236,7 +236,7 @@ HWTEST_F(DmDiscoveryManagerTest, OnDiscoverySuccess_002, testing::ext::TestSize.
     std::string pkgName;
     int32_t subscribeId = 1;
     discoveryMgr_->OnDiscoverySuccess(pkgName, subscribeId);
-    int ret1 = discoveryMgr_->discoveryContextMap_.count(pkgName);
+    uint32_t ret1 = discoveryMgr_->discoveryContextMap_.count(pkgName);
     EXPECT_EQ(ret1, 1);
     std::shared_ptr<IpcNotifyDiscoverResultReq> pReq =
         std::static_pointer_cast<IpcNotifyDiscoverResultReq>(listener_->ipcServerListener_.req_);
@@ -254,7 +254,7 @@ HWTEST_F(DmDiscoveryManagerTest, HandleDiscoveryTimeout_001, testing::ext::TestS
 {
     std::string pkgName = "com.ohos.helloworld";
     discoveryMgr_->HandleDiscoveryTimeout();
-    int ret = discoveryMgr_->discoveryContextMap_.count(pkgName);
+    uint32_t ret = discoveryMgr_->discoveryContextMap_.count(pkgName);
     EXPECT_EQ(ret, 1);
 }
 } // namespace
diff --git a/test/unittest/UTTest_softbus_connector.cpp b/test/unittest/UTTest_softbus_connector.cpp
index 4cf2039ce2468a4175bfd94dc5e523d51e54b57b..32491e69256ed4367dff0a1415a191fb977f976d 100644
--- a/test/unittest/UTTest_softbus_connector.cpp
+++ b/test/unittest/UTTest_softbus_connector.cpp
@@ -87,7 +87,7 @@ HWTEST_F(SoftbusConnectorTest, UnRegisterSoftbusDiscoveryCallback_001, testing::
 {
     std::string pkgName = "com.ohos.helloworld";
     int ret = softbusConnector->UnRegisterSoftbusDiscoveryCallback(pkgName);
-    int ret1 = SoftbusConnector::discoveryCallbackMap_.count(pkgName);
+    uint32_t ret1 = SoftbusConnector::discoveryCallbackMap_.count(pkgName);
     EXPECT_EQ(ret1, 0);
     EXPECT_EQ(ret, DM_OK);
 }
@@ -330,4 +330,4 @@ HWTEST_F(SoftbusConnectorTest, OnParameterChgCallback_001, testing::ext::TestSiz
 }
 } // namespace
 } // namespace DistributedHardware
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/utils/src/dm_anonymous.cpp b/utils/src/dm_anonymous.cpp
index 8d9a7be38150da21a5f2b8a01a9d383e4542d484..907c9f20880f77eabe86f5524587e762e7bbb7f7 100644
--- a/utils/src/dm_anonymous.cpp
+++ b/utils/src/dm_anonymous.cpp
@@ -58,4 +58,4 @@ std::string GetAnonyInt32(const int32_t value)
     return tempString;
 }
 } // namespace DistributedHardware
-} // namespace OHOS
\ No newline at end of file
+} // namespace OHOS
diff --git a/utils/src/dm_random.cpp b/utils/src/dm_random.cpp
index d7d03c24273532cb710028944211dbeac5684f6a..7a1d6a71647d23aa10ee0aa9dbb73d311e54ecf9 100644
--- a/utils/src/dm_random.cpp
+++ b/utils/src/dm_random.cpp
@@ -87,7 +87,7 @@ bool MbedtlsGenRandomStr(char *szOut, int32_t szOutLen, bool numberOnly)
         return false;
     }
     szOut[--szOutLen] = 0;
-    GetRandomData((uint8_t *)szOut, szOutLen);
+    GetRandomData((uint8_t *)szOut, (uint32_t)szOutLen);
     const int32_t NUMBER_COUNT = 10;
     const int32_t ALPHA_COUNT = 26;
     const int32_t ALPHA_BYTE_COUNT = 2;