diff --git a/imageknife/src/main/ets/components/imageknife/networkmanage/NetworkDownloadClient.ets b/imageknife/src/main/ets/components/imageknife/networkmanage/NetworkDownloadClient.ets
index d7b33c5..e001c50 100644
--- a/imageknife/src/main/ets/components/imageknife/networkmanage/NetworkDownloadClient.ets
+++ b/imageknife/src/main/ets/components/imageknife/networkmanage/NetworkDownloadClient.ets
@@ -31,7 +31,6 @@ export class NetworkDownloadClient {
     if (FileUtils.getInstance().exist(allpath)) {
       FileUtils.getInstance().deleteFile(allpath)
     }
-    let desc = filename + ".img";
     var downloadConfig = {
       url: (request.loadSrc as string),
       filePath: allpath,