diff --git a/runtime/main/extend/systemplugin/napi/ohos_url.js b/runtime/main/extend/systemplugin/napi/ohos_url.js
index ece3c454..5afb7350 100644
--- a/runtime/main/extend/systemplugin/napi/ohos_url.js
+++ b/runtime/main/extend/systemplugin/napi/ohos_url.js
@@ -91,28 +91,28 @@ export function mockUrl() {
           ' may be different from that on a real device.');
         return paramMock.paramStringMock;
       };
-    }
-    [Symbol.iterator]() {
-      console.warn('url.URLSearchParams.[Symbol.iterator] interface mocked in the Previewer. How this interface works on the Previewer' +
-        ' may be different from that on a real device.');
-      let index = 0;
-      const IteratorTwoStringMock = {
-        next: () => {
-          if (index < 1) {
-            const returnValue = [paramMock.paramStringMock, paramMock.paramStringMock];
-            index++;
-            return {
-              value: returnValue,
-              done: false
-            };
-          } else {
-            return {
-              done: true
-            };
+      this[Symbol.iterator] = function (...args) {
+        console.warn('url.URLSearchParams.[Symbol.iterator] interface mocked in the Previewer. How this interface works on the Previewer' +
+          ' may be different from that on a real device.');
+        let index = 0;
+        const IteratorTwoStringMock = {
+          next: () => {
+            if (index < 1) {
+              const returnValue = [paramMock.paramStringMock, paramMock.paramStringMock];
+              index++;
+              return {
+                value: returnValue,
+                done: false
+              };
+            } else {
+              return {
+                done: true
+              };
+            }
           }
-        }
-      };
-      return IteratorTwoStringMock;
+        };
+        return IteratorTwoStringMock;
+      }
     }
   };
   const URLClass = class URL {
diff --git a/runtime/main/extend/systemplugin/napi/ohos_util.js b/runtime/main/extend/systemplugin/napi/ohos_util.js
index 0b0482e2..017e87ac 100644
--- a/runtime/main/extend/systemplugin/napi/ohos_util.js
+++ b/runtime/main/extend/systemplugin/napi/ohos_util.js
@@ -52,9 +52,9 @@ export function mockUtil() {
       return RationalNumberMock;
     },
     LruBuffer: function (...args) {
-      console.warn("util.Lrubuffer interface mocked in the Previewer. How this interface works on the Previewer" +
+      console.warn("util.LruBuffer interface mocked in the Previewer. How this interface works on the Previewer" +
         " may be different from that on a real device.")
-      return LrubufferMock;
+      return LruBufferMock;
     },
     ScopeComparable: function (...args) {
       console.warn("util.Scope interface mocked in the Previewer. How this interface works on the Previewer" +
@@ -170,106 +170,106 @@ export function mockUtil() {
       return paramMock.paramStringMock;
     }
   }
-  const LrubufferMock = {
+  const LruBufferMock = {
     length: "[PC preview] unknow length",
     constructor(...args) {
-      console.warn("util.Lrubuffer.constructor interface mocked in the Previewer. How this interface works on the Previewer" +
+      console.warn("util.LruBuffer.constructor interface mocked in the Previewer. How this interface works on the Previewer" +
         " may be different from that on a real device.")
 	},
     updateCapacity: function (...args) {
-      console.warn("Lrubuffer.updateCapacity interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.updateCapacity interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
     },
     toString: function (...args) {
-      console.warn("Lrubuffer.toString interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.toString interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramStringMock;
     },
     getCapacity: function (...args) {
-      console.warn("Lrubuffer.getCapacity interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.getCapacity interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramNumberMock;
     },
     clear: function (...args) {
-      console.warn("Lrubuffer.clear interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.clear interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
     },
     getCreateCount: function (...args) {
-      console.warn("Lrubuffer.getCreateCount interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.getCreateCount interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramNumberMock;
     },
     getMissCount: function (...args) {
-      console.warn("Lrubuffer.getMissCount interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.getMissCount interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramNumberMock;
     },
     getRemovalCount: function (...args) {
-      console.warn("Lrubuffer.getRemovalCount interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.getRemovalCount interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramNumberMock;
     },
     getMatchCount: function (...args) {
-      console.warn("Lrubuffer.getMatchCount interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.getMatchCount interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramNumberMock;
     },
     getPutCount: function (...args) {
-      console.warn("Lrubuffer.getPutCount interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.getPutCount interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramNumberMock;
     },
     isEmpty: function (...args) {
-      console.warn("Lrubuffer.isEmpty​ interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.isEmpty​ interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramBooleanMock;
     },
     get: function (...args) {
-      console.warn("Lrubuffer.get interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.get interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramObjectMock;
     },
     put: function (...args) {
-      console.warn("Lrubuffer.put interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.put interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramObjectMock;
     },
     values: function (...args) {
-      console.warn("Lrubuffer.values interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.values interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramObjectMock;
     },
     keys: function (...args) {
-      console.warn("Lrubuffer.keys​ interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.keys​ interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramObjectMock;
     },
     remove: function (...args) {
-      console.warn("Lrubuffer.remove interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.remove interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramObjectMock;
     },
     afterRemoval: function (...args) {
-      console.warn("Lrubuffer.afterRemoval interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.afterRemoval interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
     },
     contains: function (...args) {
-      console.warn("Lrubuffer.contains​ interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.contains​ interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramBooleanMock;
     },
     createDefault: function (...args) {
-      console.warn("Lrubuffer.createDefault​ interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.createDefault​ interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramObjectMock;
     },
     entries: function (...args) {
-      console.warn("Lrubuffer.entries interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.entries interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramObjectMock;
     },
     [Symbol.iterator]: function (...args) {
-      console.warn("Lrubuffer.[Symbol.iterator] interface mockecd in the Previewer. How this interface works on the Previewer" +
+      console.warn("LruBuffer.[Symbol.iterator] interface mockecd in the Previewer. How this interface works on the Previewer" +
         "may be different from that on a real device.")
       return paramMock.paramObjectMock;
     }
diff --git a/runtime/main/extend/systemplugin/napi/ohos_worker.js b/runtime/main/extend/systemplugin/napi/ohos_worker.js
index 7a465748..4958d5fd 100644
--- a/runtime/main/extend/systemplugin/napi/ohos_worker.js
+++ b/runtime/main/extend/systemplugin/napi/ohos_worker.js
@@ -43,13 +43,6 @@ export function mockWorker() {
     transfer:'[PC preview] unknow transfer'
   };
 
-  const EventListenerMock = { 
-    evt : function (...args) {
-        console.warn('EventListener.evt interface mocked in the Previewer. How this interface works on the' +
-        ' Previewer may be different from that on a real device.') ;
-    }
-  };
-
   const EventTargetMock = {
     addEventListener : function (...args) {
         console.warn('PostMessageOptions.addEventListener interface mocked in the Previewer. How this interface works on the' +
@@ -167,7 +160,8 @@ export function mockWorker() {
   };
 
   const workerMock = {
-    Worker : WorkerClass
+    Worker : WorkerClass,
+    parentPort : '[PC preview] unknow parentPort'
   };
   return workerMock;
 }