diff --git a/app/port/controller/AbstractController.ts b/app/port/controller/AbstractController.ts
index 9b5f8326..30c41f2e 100644
--- a/app/port/controller/AbstractController.ts
+++ b/app/port/controller/AbstractController.ts
@@ -146,25 +146,25 @@ export abstract class AbstractController extends MiddlewareController {
     return new UnavailableForLegalReasonsError(`${message}, reason: ${reason}`);
   }
 
-  protected async getPackageEntityByFullname(fullname: string): Promise<PackageEntity> {
+  protected async getPackageEntityByFullname(fullname: string, allowSync?: boolean): Promise<PackageEntity> {
     const [ scope, name ] = getScopeAndName(fullname);
-    return await this.getPackageEntity(scope, name);
+    return await this.getPackageEntity(scope, name, allowSync);
   }
 
   // try to get package entity, throw NotFoundError when package not exists
-  protected async getPackageEntity(scope: string, name: string): Promise<PackageEntity> {
+  protected async getPackageEntity(scope: string, name: string, allowSync?:boolean): Promise<PackageEntity> {
     const packageEntity = await this.packageRepository.findPackage(scope, name);
     if (!packageEntity) {
       const fullname = getFullname(scope, name);
-      throw this.createPackageNotFoundErrorWithRedirect(fullname);
+      throw this.createPackageNotFoundErrorWithRedirect(fullname, undefined, allowSync);
     }
     return packageEntity;
   }
 
-  protected async getPackageVersionEntity(pkg: PackageEntity, version: string): Promise<PackageVersionEntity> {
+  protected async getPackageVersionEntity(pkg: PackageEntity, version: string, allowSync?: boolean): Promise<PackageVersionEntity> {
     const packageVersion = await this.packageRepository.findPackageVersion(pkg.packageId, version);
     if (!packageVersion) {
-      throw this.createPackageNotFoundErrorWithRedirect(pkg.fullname, version);
+      throw this.createPackageNotFoundErrorWithRedirect(pkg.fullname, version, allowSync);
     }
     return packageVersion;
   }
diff --git a/app/port/controller/package/DownloadPackageVersionTar.ts b/app/port/controller/package/DownloadPackageVersionTar.ts
index 4a4fd3b5..d53812da 100644
--- a/app/port/controller/package/DownloadPackageVersionTar.ts
+++ b/app/port/controller/package/DownloadPackageVersionTar.ts
@@ -41,8 +41,9 @@ export class DownloadPackageVersionTarController extends AbstractController {
     }
 
     // check package version in database
-    const pkg = await this.getPackageEntityByFullname(fullname);
-    const packageVersion = await this.getPackageVersionEntity(pkg, version);
+    const allowSync = this.getAllowSync(ctx);
+    const pkg = await this.getPackageEntityByFullname(fullname, allowSync);
+    const packageVersion = await this.getPackageVersionEntity(pkg, version, allowSync);
 
     // read by nfs url
     if (downloadUrl) {
diff --git a/test/port/controller/package/DownloadPackageVersionTarController.test.ts b/test/port/controller/package/DownloadPackageVersionTarController.test.ts
index 7bb823fe..21dd720c 100644
--- a/test/port/controller/package/DownloadPackageVersionTarController.test.ts
+++ b/test/port/controller/package/DownloadPackageVersionTarController.test.ts
@@ -257,6 +257,31 @@ describe('test/port/controller/package/DownloadPackageVersionTarController.test.
           error: '[NOT_FOUND] @cnpm/testmodule-download-version-tar@1.0.404404 not found',
         });
     });
+
+    it('should not create sync task when package version tgz not exists and syncNotFound=false', async () => {
+      mock(app.config.cnpmcore, 'syncMode', 'exist');
+      mock(app.config.cnpmcore, 'syncNotFound', false);
+      mock(app.config.cnpmcore, 'redirectNotFound', false);
+      const res = await app.httpRequest()
+        .get('/lodash/-/lodash-1.404.404.tgz')
+        .set('user-agent', publisher.ua + ' node/16.0.0')
+        .set('Accept', 'application/vnd.npm.install-v1+json');
+      assert(res.status === 404);
+      app.notExpectLog('[middleware:ErrorHandler][syncPackage] create sync package');
+    });
+
+    it('should create sync task when package version tgz not exists and syncNotFound=true', async () => {
+      mock(app.config.cnpmcore, 'syncMode', 'exist');
+      mock(app.config.cnpmcore, 'syncNotFound', true);
+      mock(app.config.cnpmcore, 'redirectNotFound', false);
+      const res = await app.httpRequest()
+        .get('/lodash/-/lodash-1.404.404.tgz')
+        .set('user-agent', publisher.ua + ' node/16.0.0')
+        .set('Accept', 'application/vnd.npm.install-v1+json');
+      assert(res.status === 404);
+      app.expectLog('[middleware:ErrorHandler][syncPackage] create sync package');
+    });
+
   });
 
   describe('[GET /:fullname/download/:fullname-:version.tgz] deprecatedDownload()', () => {