diff --git a/README.md b/README.md
index 8f5ec27..b24bdfd 100644
--- a/README.md
+++ b/README.md
@@ -23,6 +23,9 @@ A [legged_gym](https://github.com/leggedrobotics/legged_gym) based framework for
 <summary>2024/12/26</summary>
 
 - add terrain support, optional terrain type: ["plane", "heightfield"]. 
+
+  ![](./test_resources/terrain_demo.gif)
+
 - move test results to [tests.md](./test_resources/tests.md)
 
 </details>
diff --git a/test_resources/terrain_demo.gif b/test_resources/terrain_demo.gif
new file mode 100644
index 0000000..d678bb0
Binary files /dev/null and b/test_resources/terrain_demo.gif differ