diff --git a/doc/yaml.md b/doc/yaml.md
index ef431b06f470bead4311eb902f01b0b4cff43180..18492cc7898e38d9c76c26a3586e0613acc8ebc2 100644
--- a/doc/yaml.md
+++ b/doc/yaml.md
@@ -1,3 +1,4 @@
+```
 # 全局配置
 debug: false
 workspace: "."
@@ -62,3 +63,4 @@ phase:
   model: "{workspace}/model.py"
   dataset_name: sample_1
   thread_num: 1
+```