diff --git a/library/src/main/ets/ImageKnifeDispatcher.ets b/library/src/main/ets/ImageKnifeDispatcher.ets
index e585ee6..51d1325 100644
--- a/library/src/main/ets/ImageKnifeDispatcher.ets
+++ b/library/src/main/ets/ImageKnifeDispatcher.ets
@@ -206,7 +206,7 @@ export class ImageKnifeDispatcher {
       requestList.add({ request: currentRequest, source: requestSource })
       return
     }
-
+    LogUtil.info('image load getAndShow start:')
     let isWatchProgress : boolean = false
     if (currentRequest.imageKnifeOption.progressListener !== undefined && requestSource === ImageKnifeRequestSource.SRC) {
       isWatchProgress = true
diff --git a/library/src/main/ets/ImageKnifeLoader.ets b/library/src/main/ets/ImageKnifeLoader.ets
index 2a71b22..6d41279 100644
--- a/library/src/main/ets/ImageKnifeLoader.ets
+++ b/library/src/main/ets/ImageKnifeLoader.ets
@@ -35,6 +35,7 @@ import util from '@ohos.util';
 import { FileTypeUtil } from './utils/FileTypeUtil';
 import { DownsampleStrategy } from './downsampling/DownsampleStartegy';
 import { Downsampler } from './downsampling/Downsampler';
+import { common } from '@kit.AbilityKit';
 
 class RequestData {
   receiveSize: number = 2000
@@ -53,8 +54,13 @@ export class ImageKnifeLoader {
     callBackData.bufSize = resBuf.byteLength;
     let typeValue = new FileTypeUtil().getFileType(resBuf);
     if(typeValue == null) {
+      let unit8 = new Uint8Array(resBuf)
       LogUtil.log('ImageKnife_DataTime_requestJob.end: getFileType is null ' + request.src)
-      ImageKnifeLoader.makeEmptyResult(request,'request is not a valid image source', ImageKnifeLoader.assembleError(callBackData, LoadPhase.PHASE_GET_FORMAT, LoadPixelMapCode.IMAGE_PARSE_FORMAT_FAILED_CODE))
+      ImageKnifeLoader.makeEmptyResult(request,
+        'request is not a valid image source:' + request.src + ',buffer:' + resBuf.byteLength + ',unit8:' + unit8[0] + ',' +
+        unit8[1] + ',' + unit8[2],
+        ImageKnifeLoader.assembleError(callBackData, LoadPhase.PHASE_GET_FORMAT,
+          LoadPixelMapCode.IMAGE_PARSE_FORMAT_FAILED_CODE))
       return
     }
     callBackData.type = typeValue;
@@ -552,7 +558,7 @@ export class ImageKnifeLoader {
             ImageKnifeLoader.assembleError(callBackData,LoadPhase.PHASE_SHARE_FILE, LoadPixelMapCode.IMAGE_LOAD_SHARE_FILE_FAILED_CODE)
             loadError = 'LoadDataShareFileClient fs.open err happened uri=' + request.src + ' err.msg=' + err?.message + ' err.code=' + err?.code
           })
-        } else { //从本地文件获取
+        } else if (ImageKnifeLoader.isLocalLoadSrc(request.context, request.src)) { //从本地文件获取
           ImageKnifeLoader.assembleError(callBackData,LoadPhase.PHASE_LOCAL_FILE)
           try {
             let stat = fs.statSync(request.src);
@@ -564,8 +570,10 @@ export class ImageKnifeLoader {
             }
           } catch (err) {
             ImageKnifeLoader.assembleError(callBackData,LoadPhase.PHASE_LOCAL_FILE, LoadPixelMapCode.IMAGE_LOAD_LOCAL_FILE_FAILED_CODE)
-            loadError = err
+            loadError = 'fileDir or CacheDir:' + err
           }
+        } else {
+          loadError = 'wrong link :' + request.src
         }
       } else if (typeof request.src == 'number') { //从资源文件获取
         let manager = request.context.createModuleContext(request.moduleName).resourceManager
@@ -594,7 +602,16 @@ export class ImageKnifeLoader {
     }
     ImageKnifeLoader.parseImage(resBuf,fileKey,request, callBackData)
   }
-
+  static isLocalLoadSrc(context: Object | undefined, loadSrc: string): boolean {
+    if (context != undefined) {
+      let fileDir: string = (context as common.UIAbilityContext).filesDir as string;
+      let cacheDir: string = (context as common.UIAbilityContext).cacheDir as string
+      if (loadSrc.startsWith(fileDir) || loadSrc.startsWith(cacheDir)) {
+        return true;
+      }
+    }
+    return false;
+  }
   static getDownsamplerDecodingOptions(typeValue: string, request: RequestJobRequest, size: Size,
     SRC?: ImageKnifeRequestSource):image.DecodingOptions {
     let reqSize =