diff --git a/doc/fluid/design/dynamic_rnn/rnn.md b/doc/fluid/design/dynamic_rnn/rnn.md
index e8c8b71e4903226f7b38320633b8069bba56fc91..3e7f38d2d6f962b5d7d7fb7e168768c071bf048e 100644
--- a/doc/fluid/design/dynamic_rnn/rnn.md
+++ b/doc/fluid/design/dynamic_rnn/rnn.md
@@ -149,5 +149,5 @@ If the `output_all_steps` is set to False, it will only output the final time st
 
 
 <p align="center">
-<img src="rnn_2level_data.png"/>
+<img src="/rnn_2level_data.png"/>
 </p>