diff --git a/entry/src/main/ets/MainAbility/glide/pngj/PngWork.js b/entry/src/main/ets/MainAbility/glide/pngj/PngWork.js
new file mode 100644
index 0000000..671f38d
--- /dev/null
+++ b/entry/src/main/ets/MainAbility/glide/pngj/PngWork.js
@@ -0,0 +1,59 @@
+/*
+ * Copyright (C) 2021 Huawei Device Co., Ltd.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import arkWorker from '@ohos.worker';
+import {UPNG} from '../../glide/pngj/UPNG'
+
+export  function handler (e) {
+    var data = e.data;
+    switch (data.type) {
+        case 'readPngImageAsync':
+            var png = UPNG.decode(data.data);
+            let array = png.data;
+            let arrayData = array.buffer.slice(array.byteOffset, array.byteLength + array.byteOffset)
+            png.data = arrayData;
+            let dataObj = { type: 'readPngImageAsync', data: png, receiver: data.data}
+            arkWorker.parentPort.postMessage(dataObj, [png.data, data.data]);
+            break;
+        case 'writePngWithStringAsync':
+            let addInfo = data.info;
+            let pngDecode = UPNG.decode(data.data);
+            let newPng = UPNG.encodeWithString(addInfo, UPNG.toRGBA8(pngDecode), pngDecode.width, pngDecode.height, 0)
+            let dataObj2 = { type: 'writePngWithStringAsync', data: newPng, receiver: data.data}
+            arkWorker.parentPort.postMessage(dataObj2, [newPng, data.data]);
+            break;
+        case 'writePngAsync':
+            let pngDecode3 = UPNG.decode(data.data);
+            let newPng3 = UPNG.encode(UPNG.toRGBA8(pngDecode3), pngDecode3.width, pngDecode3.height, 0)
+            let dataObj3 = { type: 'writePngAsync', data: newPng3, receiver: data.data}
+            arkWorker.parentPort.postMessage(dataObj3, [newPng3, data.data]);
+            break;
+        case 'normal':
+            arkWorker.parentPort.postMessage(data);
+            break;
+        case 'error':
+            throw new Error('123');
+            break;
+        case 'buffer':
+            let uint8Array = new Uint8Array(data.data);
+            arkWorker.parentPort.postMessage(data, [data.data]);
+
+            break;
+        default:
+
+            break
+    }
+}
+
+
diff --git a/entry/src/main/ets/MainAbility/workers/worker1.js b/entry/src/main/ets/MainAbility/workers/worker1.js
index 1f86aa9..4102cad 100644
--- a/entry/src/main/ets/MainAbility/workers/worker1.js
+++ b/entry/src/main/ets/MainAbility/workers/worker1.js
@@ -13,47 +13,8 @@
  * limitations under the License.
  */
 import arkWorker from '@ohos.worker';
-import {UPNG} from '../glide/pngj/UPNG'
+import {handler} from '../glide/pngj/PngWork'
 
-arkWorker.parentPort.onmessage = function (e) {
-  var data = e.data;
-  switch (data.type) {
-    case 'readPngImageAsync':
-      var png = UPNG.decode(data.data);
-      let array = png.data;
-      let arrayData = array.buffer.slice(array.byteOffset, array.byteLength + array.byteOffset)
-      png.data = arrayData;
-      let dataObj = { type: 'readPngImageAsync', data: png, receiver: data.data}
-      arkWorker.parentPort.postMessage(dataObj, [png.data, data.data]);
-      break;
-    case 'writePngWithStringAsync':
-      let addInfo = data.info;
-      let pngDecode = UPNG.decode(data.data);
-      let newPng = UPNG.encodeWithString(addInfo, UPNG.toRGBA8(pngDecode), pngDecode.width, pngDecode.height, 0)
-      let dataObj2 = { type: 'writePngWithStringAsync', data: newPng, receiver: data.data}
-      arkWorker.parentPort.postMessage(dataObj2, [newPng, data.data]);
-      break;
-    case 'writePngAsync':
-      let pngDecode3 = UPNG.decode(data.data);
-      let newPng3 = UPNG.encode(UPNG.toRGBA8(pngDecode3), pngDecode3.width, pngDecode3.height, 0)
-      let dataObj3 = { type: 'writePngAsync', data: newPng3, receiver: data.data}
-      arkWorker.parentPort.postMessage(dataObj3, [newPng3, data.data]);
-      break;
-    case 'normal':
-      arkWorker.parentPort.postMessage(data);
-      break;
-    case 'error':
-      throw new Error('123');
-      break;
-    case 'buffer':
-      let uint8Array = new Uint8Array(data.data);
-      arkWorker.parentPort.postMessage(data, [data.data]);
-
-      break;
-    default:
-
-      break
-  }
-}
+arkWorker.parentPort.onmessage = handler