diff --git a/framework/examples/ohos-demo/src/main/ets/hippy_extend/ExampleViewA.ets b/framework/examples/ohos-demo/src/main/ets/hippy_extend/ExampleViewA.ets
index b162480c6e2..c3cd16ecd4c 100644
--- a/framework/examples/ohos-demo/src/main/ets/hippy_extend/ExampleViewA.ets
+++ b/framework/examples/ohos-demo/src/main/ets/hippy_extend/ExampleViewA.ets
@@ -67,7 +67,7 @@ export struct ExampleComponentA {
     // 自定义事件举例
     let event = new HippyViewEvent("onEvent1")
     let params = new Map<string, string>()
-    params['key1'] = 'value1'
+    params.set('key1', 'value1')
     event.send(this.renderView.ctx, this.renderView.tag, params)
   }
 
diff --git a/framework/ohos/src/main/ets/renderer_native/serialization/NativeRenderSerializer.ets b/framework/ohos/src/main/ets/renderer_native/serialization/NativeRenderSerializer.ets
index 368f33747bb..22697af02d4 100644
--- a/framework/ohos/src/main/ets/renderer_native/serialization/NativeRenderSerializer.ets
+++ b/framework/ohos/src/main/ets/renderer_native/serialization/NativeRenderSerializer.ets
@@ -41,15 +41,7 @@ export class NativeRenderSerializer extends PrimitiveValueSerializer {
     if (object instanceof Map) {
       this.assignId(object)
       if (object.size > 0) {
-        let keys = object.keys()
-        for (let key of keys) {
-          if(typeof key == 'string') {
-            this.writeObject(object as Map<string, HippyAny>)
-          } else {
-            this.writeMap(object as Map<HippyAny, HippyAny>)
-          }
-          break
-        }
+        this.writeMap(object as Map<HippyAny, HippyAny>)
       } else {
         this.writeObject(object as Map<string, HippyAny>)
       }
@@ -70,22 +62,35 @@ export class NativeRenderSerializer extends PrimitiveValueSerializer {
       this.writeValue(key)
       this.writeValue(value)
     })
+    Object.keys(map).forEach(key => {
+      count++
+      if (key == null) {
+        this.writeString("null")
+      } else {
+        this.writeString(key)
+      }
+      let value: HippySerValue = Reflect.get(map, key)
+      this.writeValue(value)
+    });
     this.writeTag(NativeRenderSerializationTag.END_MAP)
     this.writer_.putVarint(2 * count)
   }
 
   writeObject(map: Map<string, HippyAny>) {
     this.writeTag(NativeRenderSerializationTag.BEGIN_OBJECT)
-    map.forEach((value: HippyAny, key: string) => {
+    let count = 0
+    Object.keys(map).forEach(key => {
+      count++
       if (key == null) {
         this.writeString("null")
       } else {
         this.writeString(key)
       }
+      let value: HippySerValue = Reflect.get(map, key)
       this.writeValue(value)
-    })
+    });
     this.writeTag(NativeRenderSerializationTag.END_OBJECT)
-    this.writer_.putVarint(map.size)
+    this.writer_.putVarint(count)
   }
 
   writeList(list: Array<HippyAny>) {