diff --git a/library/index.ets b/library/index.ets
index 5e8d3ca..5df1e49 100644
--- a/library/index.ets
+++ b/library/index.ets
@@ -130,4 +130,9 @@ export { GIFFrame } from './src/main/ets/components/imageknife/utils/gif/GIFFram
 export { IDrawLifeCycle } from './src/main/ets/components/imageknife/interface/IDrawLifeCycle'
 
 // 日志管理
-export { LogUtil } from './src/main/ets/components/imageknife/utils/LogUtil'
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+export { LogUtil } from './src/main/ets/components/imageknife/utils/LogUtil'
+
+/*下采样*/
+export {Downsampler} from './src/main/ets/components/imageknife/Downsampling/Downsampler'
+
+export {DownsampleNone as sampleNone, FitCenter as fitter} from './src/main/ets/components/imageknife/Downsampling/DownsampleStartegy'
\ No newline at end of file