diff --git a/README.md b/README.md
index b7cb565..138d2ab 100644
--- a/README.md
+++ b/README.md
@@ -30,4 +30,7 @@ RxJava 和 Retrofit 结合使用的几个最常见使用方式举例。
 6. **缓存**
 
   使用 BehaviorSubject 缓存数据。
-  ![screenshot_6](./images/screenshot_6.png)
\ No newline at end of file
+  ![screenshot_6](./images/screenshot_6.png)
+
+### apk 下载
+[RxJavaSamples.apk](./apk/RxJavaSamples.apk?raw=true)
\ No newline at end of file
diff --git a/apk/RxJavaSamples.apk b/apk/RxJavaSamples.apk
new file mode 100644
index 0000000..af51be5
Binary files /dev/null and b/apk/RxJavaSamples.apk differ