diff --git a/cover.jpg b/image/cover.jpg
similarity index 100%
rename from cover.jpg
rename to image/cover.jpg
diff --git a/index.rst b/index.rst
index d15b411..24dde5c 100644
--- a/index.rst
+++ b/index.rst
@@ -6,7 +6,7 @@
 SICP 习题解答
 =====================================
 
-.. image:: cover.jpg
+.. image:: image/cover.jpg
    :align: left
    :width: 408px
    :height: 580px