diff --git a/Source/Async/AuAsyncTimer.cpp b/Source/Async/AuAsyncTimer.cpp
index 5b26a326..7ba1205d 100644
--- a/Source/Async/AuAsyncTimer.cpp
+++ b/Source/Async/AuAsyncTimer.cpp
@@ -28,7 +28,9 @@ namespace Aurora::Async
 
     void AsyncFuncTimer::CancelTimer()
     {
+        AU_LOCK_GUARD(this->mutex);
         this->Cancel();
+        AuResetMember(this->pCallback);
     }
 
     AuUInt64 AsyncFuncTimer::GetLastTime()
@@ -53,6 +55,7 @@ namespace Aurora::Async
 
     void AsyncFuncTimer::DispatchTask(IWorkItemHandler::ProcessInfo &info)
     {
+        AU_LOCK_GUARD(this->mutex);
         info.type = ETickType::eRerun;
 
         auto uTickCount = ++this->uTickCount;
@@ -68,13 +71,26 @@ namespace Aurora::Async
 
         info.reschedSteadyClockAbsNs = this->uNextTickTime;
 
-        if (this->pCallback->OnTick(uTickCount, uDelta, this->uLastTickTime))
+        if (!this->pCallback)
+        {
+            return;
+        }
+
+        try
+        {
+            if (this->pCallback->OnTick(uTickCount, uDelta, this->uLastTickTime))
+            {
+                info.type = ETickType::eSchedule;
+            }
+            else
+            {
+                info.type = ETickType::eFinished;
+            }
+        }
+        catch (...)
         {
             info.type = ETickType::eSchedule;
-        }
-        else
-        {
-            info.type = ETickType::eFinished;
+            SysPushErrorCatch();
         }
     }
 
diff --git a/Source/Async/AuAsyncTimer.hpp b/Source/Async/AuAsyncTimer.hpp
index 8f241141..f3e70d38 100644
--- a/Source/Async/AuAsyncTimer.hpp
+++ b/Source/Async/AuAsyncTimer.hpp
@@ -37,5 +37,6 @@ namespace Aurora::Async
         AuUInt64 uInterval {};
         AuUInt64 uTickCount {};
         bool bCatchUp { false };
+        AuCriticalSection mutex;
     };
 }
\ No newline at end of file