diff --git a/README.md b/README.md
index c422e338..94d26664 100644
--- a/README.md
+++ b/README.md
@@ -150,7 +150,9 @@ We sincerely appreciate your support for frp.
 
 ## Architecture
 
-![architecture](/doc/pic/architecture.png)
+<p align="center">
+  <img src="/doc/pic/architecture.jpg" alt="architecture" width="760">
+</p>
 
 ## Example Usage
 
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