diff --git a/api/@ohos.worker.d.ts b/api/@ohos.worker.d.ts
index fffe7241f19c8401af8ed3339aae376fb07a5bbf..528409ab8a61d934f4d4f8416d2af38e20e1d7dc 100644
--- a/api/@ohos.worker.d.ts
+++ b/api/@ohos.worker.d.ts
@@ -241,7 +241,7 @@ declare interface WorkerGlobalScope extends EventTarget {
    * @since 7
    * @syscap SystemCapability.Utils.Lang
    */
-  onmessage?: (this: DedicatedWorkerGlobalScope, ev: MessageEvent<T>) => void;
+  onmessage?: (this: DedicatedWorkerGlobalScope, ev: MessageEvent) => void;
 
   /**
    * The onmessage attribute of parentPort specifies the event handler
@@ -251,7 +251,7 @@ declare interface WorkerGlobalScope extends EventTarget {
    * @since 7
    * @syscap SystemCapability.Utils.Lang
    */
-  onmessageerror?: (this: DedicatedWorkerGlobalScope, ev: MessageEvent<T>) => void;
+  onmessageerror?: (this: DedicatedWorkerGlobalScope, ev: MessageEvent) => void;
 
   /**
    * Close the worker thread to stop the worker from receiving messages
@@ -287,7 +287,7 @@ declare interface WorkerGlobalScope extends EventTarget {
  * @syscap SystemCapability.Utils.Lang
  */
 declare namespace worker {
-  class Worker implements EventTarget {
+  class Worker extends EventTarget {
     /**
      * Creates a worker instance
      * @param scriptURL URL of the script to be executed by the worker
@@ -324,7 +324,7 @@ declare namespace worker {
      * @since 7
      * @syscap SystemCapability.Utils.Lang
      */
-    onmessage?: (event: MessageEvent<T>) => void;
+    onmessage?: (event: MessageEvent) => void;
 
     /**
      * The onmessage attribute of the worker specifies the event handler
@@ -333,7 +333,7 @@ declare namespace worker {
      * @since 7
      * @syscap SystemCapability.Utils.Lang
      */
-    onmessageerror?: (event: MessageEvent<T>) => void;
+    onmessageerror?: (event: MessageEvent) => void;
 
     /**
      * Sends a message to the worker thread.