diff --git a/library/index.ets b/library/index.ets
index 2316b6e..8c8c490 100644
--- a/library/index.ets
+++ b/library/index.ets
@@ -132,4 +132,5 @@ export { IDrawLifeCycle } from './src/main/ets/components/imageknife/interface/I
 // 日志管理
 export { LogUtil } from './src/main/ets/components/imageknife/utils/LogUtil'
 /*下采样*/
-export {Downsampler} from './src/main/ets/components/imageknife/Downsampling/Downsampler'
\ No newline at end of file
+export {Downsampler} from './src/main/ets/components/imageknife/Downsampling/Downsampler'
+export {DownsampleNone} from './src/main/ets/components/imageknife/Downsampling/DownsampleStartegy'
\ No newline at end of file