diff --git a/firmware/esp-idf/README.md b/firmware/esp-idf/README.md
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--- a/firmware/esp-idf/README.md
+++ b/firmware/esp-idf/README.md
@@ -5,4 +5,6 @@
 
 #### 环境
 * 芯片采用ESP32S2，基于ESP-IDF v4.2版本开发。其他版本可能会有少许出入。
-* [硬件接入文档看这里 >>>](https://gitee.com/kerwincui/wumei-smart/wikis/pages?sort_id=4203154&doc_id=1506495)
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+* [硬件接入文档看这里 >>>](https://gitee.com/kerwincui/wumei-smart/wikis/pages?sort_id=4203154&doc_id=1506495)
+
+![图片](https://gitee.com/kerwincui/wumei-smart/raw/master/document/flow.png)  
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