diff --git a/README.md b/README.md
index d604c138..f2c1cfca 100644
--- a/README.md
+++ b/README.md
@@ -27,7 +27,7 @@ AI 是当今世界上最好的外语老师，Enjoy 做 AI 最好的助教。
 
   <img src="./enjoy/snapshots/assessment.png" alt="Home" width="800" />
 
-  <img src="./enjoy/snapshots/course.png" alt="Home" width="800" />
+  <img src="./enjoy/snapshots/document.png" alt="Home" width="800" />
 
   <img src="./enjoy/snapshots/chat.png" alt="Home" width="800" />
 </div>
diff --git a/enjoy/snapshots/assessment.png b/enjoy/snapshots/assessment.png
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diff --git a/enjoy/snapshots/chat.png b/enjoy/snapshots/chat.png
index f130fed9..4d7f33d8 100644
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diff --git a/enjoy/snapshots/course.png b/enjoy/snapshots/course.png
deleted file mode 100644
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diff --git a/enjoy/snapshots/document.png b/enjoy/snapshots/document.png
new file mode 100644
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diff --git a/enjoy/snapshots/home.png b/enjoy/snapshots/home.png
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diff --git a/enjoy/snapshots/shadow.png b/enjoy/snapshots/shadow.png
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