diff --git a/services/distributedhardwarefwkservice/src/task/offline_task.cpp b/services/distributedhardwarefwkservice/src/task/offline_task.cpp
index d73ae1f4fa7bbca9571c1e0618968b743b7261a1..de8508e6405cf0452f8b669f4838bf8c5b1321e8 100644
--- a/services/distributedhardwarefwkservice/src/task/offline_task.cpp
+++ b/services/distributedhardwarefwkservice/src/task/offline_task.cpp
@@ -54,7 +54,7 @@ void OffLineTask::DoTaskInner()
 {
     DHLOGD("start offline task, id = %s, uuid = %s", GetId().c_str(), GetAnonyString(GetUUID()).c_str());
     this->SetTaskState(TaskState::RUNNING);
-    for (auto& step : this->GetTaskSteps()) {
+    for (const auto& step : this->GetTaskSteps()) {
         switch (step) {
             case TaskStep::UNREGISTER_OFFLINE_DISTRIBUTED_HARDWARE: {
                 CreateDisableTask();
diff --git a/services/distributedhardwarefwkservice/src/task/online_task.cpp b/services/distributedhardwarefwkservice/src/task/online_task.cpp
index 8f65bb3699528d823f684a60c7147e0c994ac710..b5475d40ae5d1f3c77c9846d3e22cfc6d92c40bf 100644
--- a/services/distributedhardwarefwkservice/src/task/online_task.cpp
+++ b/services/distributedhardwarefwkservice/src/task/online_task.cpp
@@ -47,7 +47,7 @@ void OnLineTask::DoTask()
 {
     DHLOGD("start online task, id = %s, uuid = %s", GetId().c_str(), GetAnonyString(GetUUID()).c_str());
     this->SetTaskState(TaskState::RUNNING);
-    for (auto& step : this->GetTaskSteps()) {
+    for (const auto& step : this->GetTaskSteps()) {
         switch (step) {
             case TaskStep::SYNC_ONLINE_INFO: {
                 DoSyncInfo();
diff --git a/services/distributedhardwarefwkservice/test/unittest/common/task/src/mock_offline_task.cpp b/services/distributedhardwarefwkservice/test/unittest/common/task/src/mock_offline_task.cpp
index ad52c38f6d30f89ccad9ce57ab23a108c9193c94..b30914ec919ade2f9c0a84ed6a00f73a62e6613a 100644
--- a/services/distributedhardwarefwkservice/test/unittest/common/task/src/mock_offline_task.cpp
+++ b/services/distributedhardwarefwkservice/test/unittest/common/task/src/mock_offline_task.cpp
@@ -30,7 +30,7 @@ MockOffLineTask::MockOffLineTask(const std::string &networkId, const std::string
 
 void MockOffLineTask::CreateDisableTask()
 {
-    for (auto &devInfo : offLineDevInfos) {
+    for (const auto &devInfo : offLineDevInfos) {
         TaskParam taskParam = {
             .networkId = devInfo.networkId,
             .uuid = devInfo.uuid,