diff --git a/atomicserviceweb/interfaces/atomicserviceweb.js b/atomicserviceweb/interfaces/atomicserviceweb.js
index 6bf2ff73e9df48e82a36c4c286bdaa229cd530f5..232beecc9ee5de5ee00da75f9a8e8c0b451e9c20 100644
--- a/atomicserviceweb/interfaces/atomicserviceweb.js
+++ b/atomicserviceweb/interfaces/atomicserviceweb.js
@@ -775,22 +775,6 @@ class AtomicService {
         return n6.substring(o6 + 1);
     }
 
-    saveDownloadFile(z5, a6, b6, c6) {
-        let d6 = new filePicker.DocumentViewPicker();
-        d6.save({
-            newFileNames: [a6]
-        }).then(h6 => {
-            let i6 = h6[0];
-            fs.copy(fileUri.getUriFromPath(z5), i6).then(() => {
-                c6 && c6(i6);
-            }).catch((l6) => {
-                this.error(l6, b6);
-            });
-        }).catch((g6) => {
-            this.error(g6, b6);
-        });
-    }
-
     checkAccessToken(v5) {
         let w5 = bundleManager.getBundleInfoForSelfSync(bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION);
         let x5 = w5.appInfo.accessTokenId;
@@ -1003,22 +987,14 @@ class AtomicServiceApi extends AtomicService {
 
     openPreview(n3) {
         let o3 = this.getUri(n3.uri);
-        filePreview.canPreview(this.context, o3).then((s3) => {
-            if (!s3) {
-                this.errorWithCodeAndMsg(IMAGE_CAN_NOT_PREVIEW_ERROR, n3);
-                return;
-            }
-            filePreview.openPreview(this.context, {
-                uri: o3,
-                mimeType: n3.mimeType,
-                title: n3.title
-            }).then(() => {
-                this.success(new OpenPreviewResult(), n3);
-            }).catch((v3) => {
-                this.error(v3, n3);
-            });
-        }).catch((r3) => {
-            this.error(r3, n3);
+        filePreview.openPreview(this.context, {
+            uri: o3,
+            mimeType: n3.mimeType,
+            title: n3.title
+        }).then(() => {
+            this.success(new OpenPreviewResult(), n3);
+        }).catch((v3) => {
+            this.error(v3, n3);
         });
     }
 
@@ -1050,7 +1026,6 @@ class AtomicServiceApi extends AtomicService {
     }
 
     downloadFile(m2) {
-        let n2 = m2.fileName ? m2.fileName : this.parseFileNameFromUrl(m2.url);
         let o2 = `${util.generateRandomUUID().replaceAll('-', '')}`;
         let p2 = `${this.context.cacheDir}/${o2}`;
         request.downloadFile(this.context, {
@@ -1063,9 +1038,7 @@ class AtomicServiceApi extends AtomicService {
             background: false
         }).then((t2) => {
             t2.on('complete', () => {
-                this.saveDownloadFile(p2, n2, m2, y2 => {
-                    this.success(new DownloadFileResult(y2), m2);
-                });
+                    this.success(new DownloadFileResult(p2), m2);
             });
             t2.on('fail', w2 => {
                 this.errorWithCodeAndMsg(new AsError(w2, 'File download fail.'), m2);
diff --git a/atomicserviceweb/source/atomicserviceweb.ets b/atomicserviceweb/source/atomicserviceweb.ets
index 625fc8603c55f26cdaa37d0ab9bf0ca9722a6357..67faf488adb39044a80dd09729e7b26f997ab500 100644
--- a/atomicserviceweb/source/atomicserviceweb.ets
+++ b/atomicserviceweb/source/atomicserviceweb.ets
@@ -657,23 +657,6 @@ class AtomicService {
     return http.substring(index + 1);
   }
 
-  saveDownloadFile(filePath: string, fileName: string, options: DownloadFileOptions,
-    callback: (uri: string) => void): void {
-    let documentPicker = new filePicker.DocumentViewPicker();
-    documentPicker.save({
-      newFileNames: [fileName]
-    }).then(res => {
-      let uri: string = res[0];
-      fs.copy(fileUri.getUriFromPath(filePath), uri).then(() => {
-        callback && callback(uri);
-      }).catch((err: BusinessError) => {
-        this.error(err, options);
-      });
-    }).catch((err: BusinessError) => {
-      this.error(err, options);
-    });
-  }
-
   checkAccessToken(permissionName: Permissions): Promise<abilityAccessCtrl.GrantStatus> {
     let bundleInfo: bundleManager.BundleInfo = bundleManager.getBundleInfoForSelfSync(
       bundleManager.BundleFlag.GET_BUNDLE_INFO_WITH_APPLICATION);
@@ -889,20 +872,12 @@ class AtomicServiceApi extends AtomicService {
 
   openPreview(options: OpenPreviewOptions): void {
     let uri: string = this.getUri(options.uri as string);
-    filePreview.canPreview(this.context, uri).then((res: boolean) => {
-      if (!res) {
-        this.errorWithCodeAndMsg(IMAGE_CAN_NOT_PREVIEW_ERROR, options);
-        return;
-      }
-      filePreview.openPreview(this.context, {
-        uri: uri,
-        mimeType: options.mimeType as string,
-        title: options.title
-      }).then(() => {
-        this.success(new OpenPreviewResult(), options);
-      }).catch((err: BusinessError) => {
-        this.error(err, options);
-      });
+    filePreview.openPreview(this.context, {
+      uri: uri,
+      mimeType: options.mimeType as string,
+      title: options.title
+    }).then(() => {
+      this.success(new OpenPreviewResult(), options);
     }).catch((err: BusinessError) => {
       this.error(err, options);
     });
@@ -936,7 +911,6 @@ class AtomicServiceApi extends AtomicService {
   }
 
   downloadFile(options: DownloadFileOptions): void {
-    let fileName: string = options.fileName ? options.fileName : this.parseFileNameFromUrl(options.url);
     let cacheFileName: string = `${util.generateRandomUUID().replaceAll('-', '')}`;
     let filePath: string = `${this.context.cacheDir}/${cacheFileName}`;
     request.downloadFile(this.context, {
@@ -949,9 +923,7 @@ class AtomicServiceApi extends AtomicService {
       background: false
     }).then((downloadTask: request.DownloadTask) => {
       downloadTask.on('complete', () => {
-        this.saveDownloadFile(filePath, fileName, options, uri => {
-          this.success(new DownloadFileResult(uri), options);
-        });
+        this.success(new DownloadFileResult(filePath), options);
       });
       downloadTask.on('fail', errCode => {
         this.errorWithCodeAndMsg(new AsError(errCode, 'File download fail.'), options);