diff --git a/imageknife/src/main/ets/components/imageknife/networkmanage/DownloadClient.ets b/imageknife/src/main/ets/components/imageknife/networkmanage/DownloadClient.ets
index e94b7cc..485f1b3 100644
--- a/imageknife/src/main/ets/components/imageknife/networkmanage/DownloadClient.ets
+++ b/imageknife/src/main/ets/components/imageknife/networkmanage/DownloadClient.ets
@@ -13,12 +13,12 @@
  * limitations under the License.
  */
 
-import { IDataFetch } from "../networkmanage/IDataFetch"
-import { RequestOption } from "../RequestOption"
-import { Md5 } from "../../cache/Md5"
-import { FileUtils } from "../../cache/FileUtils"
-import {NetworkDownloadClient} from'./NetworkDownloadClient'
-import {LoadLocalFileClient} from'./LoadLocalFileClient'
+import { IDataFetch } from '../networkmanage/IDataFetch'
+import { RequestOption } from '../RequestOption'
+import { Md5 } from '../../cache/Md5'
+import { FileUtils } from '../../cache/FileUtils'
+import { NetworkDownloadClient } from './NetworkDownloadClient'
+import { LoadLocalFileClient } from './LoadLocalFileClient'
 import loadRequest from '@ohos.request';
 
 // 数据加载器
@@ -26,17 +26,16 @@ export class DownloadClient implements IDataFetch {
   private networkClient = new NetworkDownloadClient();
   private localFileClient = new LoadLocalFileClient();
 
-
   loadData(request: RequestOption, onCompleteFunction, onErrorFunction) {
-      if(typeof request.loadSrc == 'string') {
-        if (request.loadSrc.startsWith(globalThis.ImageKnife.getImageKnifeContext()
-          .filesDir) || request.loadSrc.startsWith(globalThis.ImageKnife.getImageKnifeContext().cacheDir)) {
-          // 本地沙盒
-          this.localFileClient.loadLocalFileData(request,onCompleteFunction,onErrorFunction)
-        }else{
-          // 网络下载
-          this.networkClient.downloadNetworkData(request,onCompleteFunction,onErrorFunction)
-        }
+    if (typeof request.loadSrc == 'string') {
+      if (request.loadSrc.startsWith(globalThis.ImageKnife.getImageKnifeContext()
+        .filesDir) || request.loadSrc.startsWith(globalThis.ImageKnife.getImageKnifeContext().cacheDir)) {
+        // 本地沙盒
+        this.localFileClient.loadData(request, onCompleteFunction, onErrorFunction)
+      } else {
+        // 网络下载
+        this.networkClient.loadData(request, onCompleteFunction, onErrorFunction)
       }
+    }
   }
 }
\ No newline at end of file
diff --git a/imageknife/src/main/ets/components/imageknife/networkmanage/IDataFetch.ets b/imageknife/src/main/ets/components/imageknife/networkmanage/IDataFetch.ets
index 4a3340b..019d763 100644
--- a/imageknife/src/main/ets/components/imageknife/networkmanage/IDataFetch.ets
+++ b/imageknife/src/main/ets/components/imageknife/networkmanage/IDataFetch.ets
@@ -13,9 +13,9 @@
  * limitations under the License.
  */
 
-import {RequestOption} from "../RequestOption"
+import { RequestOption } from '../RequestOption'
 
 // 资源加载接口
 export interface IDataFetch {
-  loadData(request: RequestOption, onCompleteFunction, onErrorFunction);
+  loadData(request: RequestOption, onComplete: (img: ArrayBuffer) => void, onError: (err: string) => void);
 }
\ No newline at end of file
diff --git a/imageknife/src/main/ets/components/imageknife/networkmanage/LoadLocalFileClient.ets b/imageknife/src/main/ets/components/imageknife/networkmanage/LoadLocalFileClient.ets
index 0218b77..4998b72 100644
--- a/imageknife/src/main/ets/components/imageknife/networkmanage/LoadLocalFileClient.ets
+++ b/imageknife/src/main/ets/components/imageknife/networkmanage/LoadLocalFileClient.ets
@@ -13,20 +13,20 @@
  * limitations under the License.
  */
 
-import { IDataFetch } from "../networkmanage/IDataFetch"
-import { RequestOption } from "../RequestOption"
-import { Md5 } from "../../cache/Md5"
-import { FileUtils } from "../../cache/FileUtils"
+import { IDataFetch } from '../networkmanage/IDataFetch'
+import { RequestOption } from '../RequestOption'
+import { Md5 } from '../../cache/Md5'
+import { FileUtils } from '../../cache/FileUtils'
 import loadRequest from '@ohos.request';
 
 export class LoadLocalFileClient {
-  loadLocalFileData(request: RequestOption, onCompleteFunction, onErrorFunction) {
-    if(typeof request.loadSrc == 'string') {
-     let fileBuffer = FileUtils.getInstance().readFilePic(request.loadSrc)
-      if(fileBuffer == null || fileBuffer.byteLength <=0){
-        onErrorFunction('LoadLocalFileClient loadLocalFileData The File Does Not Exist!Check The File!')
-      }else{
-        onCompleteFunction(fileBuffer);
+  loadData(request: RequestOption,  onComplete: (img: ArrayBuffer) => void, onError: (err: string) => void) {
+    if (typeof request.loadSrc == 'string') {
+      let fileBuffer = FileUtils.getInstance().readFilePic(request.loadSrc)
+      if (fileBuffer == null || fileBuffer.byteLength <= 0) {
+        onError('LoadLocalFileClient loadLocalFileData The File Does Not Exist!Check The File!')
+      } else {
+        onComplete(fileBuffer);
       }
     }
   }
diff --git a/imageknife/src/main/ets/components/imageknife/networkmanage/NetworkDownloadClient.ets b/imageknife/src/main/ets/components/imageknife/networkmanage/NetworkDownloadClient.ets
index a848e56..d7b33c5 100644
--- a/imageknife/src/main/ets/components/imageknife/networkmanage/NetworkDownloadClient.ets
+++ b/imageknife/src/main/ets/components/imageknife/networkmanage/NetworkDownloadClient.ets
@@ -13,15 +13,15 @@
  * limitations under the License.
  */
 
-import { IDataFetch } from "../networkmanage/IDataFetch"
-import { RequestOption } from "../RequestOption"
-import { Md5 } from "../../cache/Md5"
-import { FileUtils } from "../../cache/FileUtils"
+import { IDataFetch } from '../networkmanage/IDataFetch'
+import { RequestOption } from '../RequestOption'
+import { Md5 } from '../../cache/Md5'
+import { FileUtils } from '../../cache/FileUtils'
 import loadRequest from '@ohos.request';
 
 // 数据加载器
-export class NetworkDownloadClient  {
-  downloadNetworkData(request: RequestOption, onCompleteFunction, onErrorFunction) {
+export class NetworkDownloadClient {
+  loadData(request: RequestOption, onComplete: (img: ArrayBuffer) => void, onError: (err: string) => void) {
     let filename = Md5.hashStr(request.generateDataKey);
     let downloadFolder = request.getFilesPath() + "/" + request.networkCacheFolder;
     let allpath = request.getFilesPath() + "/" + request.networkCacheFolder + "/" + filename + ".img";
@@ -42,7 +42,7 @@ export class NetworkDownloadClient  {
         loadTask = downloadTask;
 
         loadTask.on('progress', (receivedSize, totalSize) => {
-          if(totalSize > 0) {
+          if (totalSize > 0) {
             // 并不是所有服务器都会返回totalSize 当没有文件大小的时候,下载进度没有百分比回调,只能知道目前下载了多少数据量
             let percent = Math.round(((receivedSize * 1.0) / (totalSize * 1.0)) * 100)
             if (request.progressFunc) {
@@ -55,7 +55,7 @@ export class NetworkDownloadClient  {
           let downloadPath = allpath;
           request.downloadFilePath = downloadPath;
           let arraybuffer = FileUtils.getInstance().readFilePic(downloadPath)
-          onCompleteFunction(arraybuffer);
+          onComplete(arraybuffer);
           FileUtils.getInstance().deleteFile(downloadPath);
 
           loadTask.off('complete', () => {
@@ -83,7 +83,7 @@ export class NetworkDownloadClient  {
         })
 
         loadTask.on('fail', (err) => {
-          onErrorFunction('NetworkDownloadClient Download task fail err =' + err)
+          onError('NetworkDownloadClient Download task fail err =' + err)
           if (loadTask) {
             loadTask.remove().then(result => {
               loadTask.off('complete', () => {
@@ -109,10 +109,11 @@ export class NetworkDownloadClient  {
         })
 
       } else {
-        onErrorFunction('NetworkDownloadClient downloadTask dismiss!')
+        onError('NetworkDownloadClient downloadTask dismiss!')
       }
-    }).catch((err) => {
-      onErrorFunction(err)
+    })
+      .catch((err) => {
+      onError("下载子系统download错误捕获,error="+err.message);
     })
   }
 }
\ No newline at end of file
diff --git a/imageknife/src/main/ets/components/imageknife/requestmanage/RequestManager.ets b/imageknife/src/main/ets/components/imageknife/requestmanage/RequestManager.ets
index 0a9a3a8..5ffb29d 100644
--- a/imageknife/src/main/ets/components/imageknife/requestmanage/RequestManager.ets
+++ b/imageknife/src/main/ets/components/imageknife/requestmanage/RequestManager.ets
@@ -190,7 +190,10 @@ export class RequestManager {
       let success = (arraybuffer) => {
         this.downloadSuccess(arraybuffer, onComplete, onError)
       }
-      this.mIDataFetch.loadData(request, success, onError);
+      let error = (errorMsg:string) =>{
+        onError(errorMsg)
+      }
+      this.mIDataFetch.loadData(request, success, error);
   }
 
   // 加载本地资源