diff --git a/interfaces/inner_api/code_sign_utils/include/code_sign_enable_multi_task.h b/interfaces/inner_api/code_sign_utils/include/code_sign_enable_multi_task.h
index 46f504a05051fefe01bb1d8c64281431d8704777..222eef2c3fa76021bc71ab5a433d39ca56a4218b 100644
--- a/interfaces/inner_api/code_sign_utils/include/code_sign_enable_multi_task.h
+++ b/interfaces/inner_api/code_sign_utils/include/code_sign_enable_multi_task.h
@@ -67,7 +67,9 @@ private:
     std::mutex cvLock_;
     std::condition_variable taskfinish_;
     std::vector<std::pair<std::string, code_sign_enable_arg >> enableData_;
-    OHOS::ThreadPool enableCodeSignTaskWorker_;
+    static std::mutex tpLock_;
+    static OHOS::ThreadPool enableCodeSignTaskWorker_;
+    static bool threadPoolInitialed;
     uint32_t taskCallBack_;
 };
 }
diff --git a/interfaces/inner_api/code_sign_utils/src/code_sign_enable_multi_task.cpp b/interfaces/inner_api/code_sign_utils/src/code_sign_enable_multi_task.cpp
index 01661753a30751ebaa891c82cef8f367681da613..08ed0a78d6d1bd7fa5e2e9b436075ff9bd7e608d 100644
--- a/interfaces/inner_api/code_sign_utils/src/code_sign_enable_multi_task.cpp
+++ b/interfaces/inner_api/code_sign_utils/src/code_sign_enable_multi_task.cpp
@@ -34,17 +34,25 @@ namespace Security {
 namespace CodeSign {
 constexpr uint32_t CODE_SIGN_TASK_TIMEOUT_MS = 300000;
 constexpr uint32_t DEFAULT_THREADS_NUM = 8;
+OHOS::ThreadPool CodeSignEnableMultiTask::enableCodeSignTaskWorker_("EnableCodeSign");
+bool CodeSignEnableMultiTask::threadPoolInitialed = false;
+std::mutex CodeSignEnableMultiTask::tpLock_;
 
-CodeSignEnableMultiTask::CodeSignEnableMultiTask(): enableCodeSignTaskWorker_("EnableCodeSign"), taskCallBack_(0)
+CodeSignEnableMultiTask::CodeSignEnableMultiTask(): taskCallBack_(0)
 {
     LOG_INFO("Tasks init.");
-    enableCodeSignTaskWorker_.Start(DEFAULT_THREADS_NUM);
+    if (!threadPoolInitialed) {
+        std::lock_guard<std::mutex> lock(tpLock_);
+        if (!threadPoolInitialed) {
+            threadPoolInitialed = true;
+            enableCodeSignTaskWorker_.Start(DEFAULT_THREADS_NUM);
+        }
+    }
 }
 
 CodeSignEnableMultiTask::~CodeSignEnableMultiTask()
 {
     LOG_INFO("Tasks finish.");
-    enableCodeSignTaskWorker_.Stop();
 }
 
 void CodeSignEnableMultiTask::AddTaskData(const std::string &targetFile, const struct code_sign_enable_arg &arg)