diff --git a/services/base/src/thread_handler_impl.cpp b/services/base/src/thread_handler_impl.cpp
index 468dfd776486cb62082bd334f1aaffc31ea16a4b..c571bea783f18be6cc242a8d160aed898e38694c 100644
--- a/services/base/src/thread_handler_impl.cpp
+++ b/services/base/src/thread_handler_impl.cpp
@@ -33,6 +33,8 @@ namespace UserIam {
 namespace UserAuth {
 using namespace OHOS;
 using namespace OHOS::UserIam::Common;
+constexpr uint32_t TASK_BLOCK_MONITOR_TIMEOUT = 20;
+
 ThreadHandlerImpl::ThreadHandlerImpl(std::string name, bool canSuspend) : pool_(name), canSuspend_(canSuspend)
 {
     pool_.Start(1);
@@ -52,8 +54,11 @@ void ThreadHandlerImpl::PostTask(const Task &task)
     }
     pool_.AddTask(task);
 
-    constexpr uint32_t TASK_BLOCK_MONITOR_TIMEOUT = 20;
     auto taskBlockMonitor = MakeShared<XCollieHelper>("taskBlockMonitor", TASK_BLOCK_MONITOR_TIMEOUT);
+    if (taskBlockMonitor == nullptr) {
+        IAM_LOGE("taskBlockMonitor is nullptr");
+        return;
+    }
     pool_.AddTask([taskBlockMonitor] {
         (void)taskBlockMonitor;
     });
diff --git a/services/base/src/thread_handler_singleton_impl.cpp b/services/base/src/thread_handler_singleton_impl.cpp
index dcf5b55ca84f801a21650d6cd5d5d9ac4b02e0d8..1da2d6441303b43267288c45e75902dc1ef61696 100644
--- a/services/base/src/thread_handler_singleton_impl.cpp
+++ b/services/base/src/thread_handler_singleton_impl.cpp
@@ -34,12 +34,18 @@ namespace UserIam {
 namespace UserAuth {
 using namespace OHOS;
 using namespace OHOS::UserIam::Common;
+constexpr uint32_t TASK_BLOCK_MONITOR_TIMEOUT = 20;
+
 void ThreadHandlerSingletonImpl::PostTask(const Task &task)
 {
     RelativeTimer::GetInstance().Register(task, 0);
 
-    constexpr uint32_t TASK_BLOCK_MONITOR_TIMEOUT = 20;
     auto taskBlockMonitor = MakeShared<XCollieHelper>("taskBlockMonitor", TASK_BLOCK_MONITOR_TIMEOUT);
+    if (taskBlockMonitor == nullptr) {
+        IAM_LOGE("taskBlockMonitor is nullptr");
+        return;
+    }
+
     RelativeTimer::GetInstance().Register(
         [taskBlockMonitor] {
             (void)taskBlockMonitor;