diff --git a/shell/platform/ohos/flutter_embedding/flutter/src/main/cpp/types/libflutter/index.d.ets b/shell/platform/ohos/flutter_embedding/flutter/src/main/cpp/types/libflutter/index.d.ets
index e87ee85e6a666d83b54f94dcce1b624bfc39f3be..7eba67a0d0c2b2959e5875d6646807a8045586bc 100644
--- a/shell/platform/ohos/flutter_embedding/flutter/src/main/cpp/types/libflutter/index.d.ets
+++ b/shell/platform/ohos/flutter_embedding/flutter/src/main/cpp/types/libflutter/index.d.ets
@@ -48,7 +48,7 @@ export const nativeInit: (
 export const nativeAttach: (napi: FlutterNapi) => number;
 
 export const nativeSpawn: (
-  nativeSpawningShellId: number,
+  nativeSpawningShellId: number | null,
   entrypointFunctionName: string,
   pathToEntrypointFunction: string,
   initialRoute: string,
diff --git a/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/embedding/engine/dart/DartMessenger.ets b/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/embedding/engine/dart/DartMessenger.ets
index 77e926377ef428c29344019085a800f725e8354c..6e9bfab834fbdc2b0929e774ecd94c78d4683e7a 100644
--- a/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/embedding/engine/dart/DartMessenger.ets
+++ b/shell/platform/ohos/flutter_embedding/flutter/src/main/ets/embedding/engine/dart/DartMessenger.ets
@@ -74,7 +74,7 @@ export class DartMessenger implements BinaryMessenger, PlatformMessageHandler {
       this.messageHandlers.delete(channel);
       return;
     }
-    let dartMessengerTaskQueue: DartMessengerTaskQueue | null;
+    let dartMessengerTaskQueue: DartMessengerTaskQueue | null = null;
     if( taskQueue != null) {
       dartMessengerTaskQueue = this.createdTaskQueues.get(taskQueue) ?? null;
       if(dartMessengerTaskQueue == null) {
@@ -167,7 +167,7 @@ export class DartMessenger implements BinaryMessenger, PlatformMessageHandler {
     }
     if (!messageDeferred) {
       //ArkTS 没有线程池,任务队列使用异步实现
-      if(handlerInfo.taskQueue != null) {
+      if(handlerInfo?.taskQueue != null) {
           this.asyncInvokeHandler(handlerInfo, message, replyId);
         } else {
           this.invokeHandler(handlerInfo, message, replyId);  
@@ -217,7 +217,7 @@ export class DartMessenger implements BinaryMessenger, PlatformMessageHandler {
 class HandlerInfo {
   handler: BinaryMessageHandler;
   taskQueue: DartMessengerTaskQueue | null;
-  constructor(handler: BinaryMessageHandler, taskQueue?:DartMessengerTaskQueue) {
+  constructor(handler: BinaryMessageHandler, taskQueue?:DartMessengerTaskQueue | null) {
     this.handler = handler;
     this.taskQueue = taskQueue ?? null;
   }