diff --git a/old/services/core/src/authority/trust_group_manager.cpp b/old/services/core/src/authority/trust_group_manager.cpp
index 14058ba9b22e3119a460cb0fb81c8326292d9dbd..31c920f44fa8f953dffb778bb62dd435638c281f 100644
--- a/old/services/core/src/authority/trust_group_manager.cpp
+++ b/old/services/core/src/authority/trust_group_manager.cpp
@@ -78,6 +78,10 @@ bool TrustGroupManager::InitHichainService()
 void TrustGroupManager::InitDataChangeListener()
 {
     dataChangeListener_.onDeviceUnBound = OnDeviceUnBoundAdapter;
+    if (hichainGmInstance_ == nullptr) {
+        HILOGE("hichainGmInstance_ is nullptr");
+        return;
+    }
     if (hichainGmInstance_->regDataChangeListener(AUTH_APPID.c_str(), &dataChangeListener_) != 0) {
         HILOGE("auth RegDataChangeListener failed");
     }
diff --git a/old/services/core/src/contentsensor/content_sensor_manager.cpp b/old/services/core/src/contentsensor/content_sensor_manager.cpp
index 86e13eb3dd7b2506400255be819f2cc243858f54..6792235b367d4ee1606bf28ec95264f0ab7a6c7d 100644
--- a/old/services/core/src/contentsensor/content_sensor_manager.cpp
+++ b/old/services/core/src/contentsensor/content_sensor_manager.cpp
@@ -52,13 +52,13 @@ bool ContentSensorManager::Collect()
         HITRACE_METER_NAME(HITRACE_TAG_DEVICE_PROFILE, DP_CONTENT_SENSOR_TRACE);
         for (auto& task : taskList) {
             ServiceCharacteristicProfile profileData;
-            if (!task->ConvertToProfileData(profileData)) {
+            if (task == nullptr || !task->ConvertToProfileData(profileData)) {
                 continue;
             }
             task->DoCollect(profileData);
         }
     };
-    if (!csCollectorHandler_->PostTask(csTask)) {
+    if (csCollectorHandler_ == nullptr || !csCollectorHandler_->PostTask(csTask)) {
         HILOGE("post task failed");
         return false;
     }
diff --git a/old/services/core/src/dbstorage/device_profile_storage_manager.cpp b/old/services/core/src/dbstorage/device_profile_storage_manager.cpp
index 56a2cd1ac83bd0528b8d8767a253fb1213ff6ab0..6138571c13a0cb922bd521678e10160aa4d59770 100644
--- a/old/services/core/src/dbstorage/device_profile_storage_manager.cpp
+++ b/old/services/core/src/dbstorage/device_profile_storage_manager.cpp
@@ -256,7 +256,10 @@ void DeviceProfileStorageManager::SetServiceType(const std::string& udid,
         }
         return;
     }
-
+    if (onlineSyncTbl_ == nullptr) {
+        HILOGE("onlineSyncTbl is nullptr");
+        return;
+    }
     std::string value;
     std::string key = GenerateKey(udid, SERVICES, KeyType::SERVICE_LIST);
     int32_t result = onlineSyncTbl_->GetDeviceProfile(key, value);
@@ -329,7 +332,7 @@ int32_t DeviceProfileStorageManager::DeleteDeviceProfile(const std::string& serv
 
 int32_t DeviceProfileStorageManager::RemoveUnBoundDeviceProfile(const std::string& udid)
 {
-    if (onlineSyncTbl_->GetInitStatus() == StorageInitStatus::INIT_FAILED) {
+    if (onlineSyncTbl_ == nullptr || onlineSyncTbl_->GetInitStatus() == StorageInitStatus::INIT_FAILED) {
         HILOGE("kvstore init failed");
         return ERR_DP_INIT_DB_FAILED;
     }
@@ -354,7 +357,7 @@ int32_t DeviceProfileStorageManager::RemoveUnBoundDeviceProfile(const std::strin
 
 int32_t DeviceProfileStorageManager::RemoveRemoteDeviceProfile()
 {
-    if (onlineSyncTbl_->GetInitStatus() == StorageInitStatus::INIT_FAILED) {
+    if (onlineSyncTbl_ == nullptr || onlineSyncTbl_->GetInitStatus() == StorageInitStatus::INIT_FAILED) {
         HILOGE("kvstore init failed");
         return ERR_DP_INIT_DB_FAILED;
     }
@@ -477,7 +480,9 @@ bool DeviceProfileStorageManager::CheckSyncOption(const SyncOptions& syncOptions
     DpDeviceManager::GetInstance().GetDeviceList(onlineDevices);
     std::list<std::string> onlineDeviceIds;
     for (const auto& onlineDevice : onlineDevices) {
-        onlineDeviceIds.emplace_back(onlineDevice->GetNetworkId());
+        if (onlineDevice != nullptr) {
+            onlineDeviceIds.emplace_back(onlineDevice->GetNetworkId());
+        }
     }
 
     // check whether deviceId is online
@@ -509,6 +514,10 @@ void DeviceProfileStorageManager::FlushProfileItems()
 {
     std::string services;
     std::string servicesKey = GenerateKey(localUdid_, SERVICES, KeyType::SERVICE_LIST);
+    if (onlineSyncTbl_ == nullptr) {
+        HILOGE("onlineSyncTbl is nullptr");
+        return;
+    }
     int32_t errCode = onlineSyncTbl_->GetDeviceProfile(servicesKey, services);
     std::unique_lock<std::mutex> autoLock(serviceLock_);
     if (errCode == ERR_OK) {
@@ -543,11 +552,11 @@ void DeviceProfileStorageManager::RegisterCallbacks()
 {
     HILOGI("called");
     int32_t errCode = ERR_OK;
-    if (kvStoreObserver_ != nullptr) {
+    if (onlineSyncTbl_ != nullptr && kvStoreObserver_ != nullptr) {
         errCode = onlineSyncTbl_->SubscribeKvStore(kvStoreObserver_);
         HILOGI("SubscribeKvStore errCode = %{public}d", errCode);
     }
-    if (kvStoreSyncCallback_ != nullptr) {
+    if (onlineSyncTbl_ != nullptr && kvStoreSyncCallback_ != nullptr) {
         errCode = onlineSyncTbl_->RegisterSyncCallback(kvStoreSyncCallback_);
         HILOGI("RegisterSyncCallback errCode = %{public}d", errCode);
     }
@@ -573,6 +582,10 @@ int32_t DeviceProfileStorageManager::UnSubscribeKvStore(const std::shared_ptr<Kv
 {
     std::lock_guard<std::mutex> autoLock(callbackLock_);
     kvStoreObserver_ = nullptr;
+    if (onlineSyncTbl_ == nullptr) {
+        HILOGE("onlineSyncTbl is nullptr");
+        return ERR_DP_INVALID_PARAMS;
+    }
     return onlineSyncTbl_->UnSubscribeKvStore(observer);
 }
 
@@ -590,6 +603,10 @@ int32_t DeviceProfileStorageManager::UnRegisterSyncCallback()
 {
     std::lock_guard<std::mutex> autoLock(callbackLock_);
     kvStoreSyncCallback_ = nullptr;
+    if (onlineSyncTbl_ == nullptr) {
+        HILOGE("onlineSyncTbl is nullptr");
+        return ERR_DP_INVALID_PARAMS;
+    }
     return onlineSyncTbl_->UnRegisterSyncCallback();
 }
 
diff --git a/old/services/core/src/dbstorage/sync_coordinator.cpp b/old/services/core/src/dbstorage/sync_coordinator.cpp
index dc9059df23b46efe8a5a8111e2c46624df2e1c3e..5fe340d26d6581aa605894e82e1714b4c021cd90 100644
--- a/old/services/core/src/dbstorage/sync_coordinator.cpp
+++ b/old/services/core/src/dbstorage/sync_coordinator.cpp
@@ -70,7 +70,7 @@ bool SyncCoordinator::IsOnlineSync()
 
 bool SyncCoordinator::DispatchSyncTask(const SyncTask& syncTask, int64_t delayTime)
 {
-    if (!syncHandler_->PostTask(syncTask, delayTime)) {
+    if (syncHandler_ == nullptr || !syncHandler_->PostTask(syncTask, delayTime)) {
         HILOGE("post task failed");
         isOnSync_ = false;
         return false;