diff --git a/docs/data/format/segmentation.md b/docs/data/format/segmentation.md
index 87590befe9b3d2277b135d9a4ddf3f40cc029502..30dbffe0825ed78226180e119d253e97cc05f75b 100644
--- a/docs/data/format/segmentation.md
+++ b/docs/data/format/segmentation.md
@@ -34,7 +34,7 @@ MyDataset/ # 语义分割数据集根目录
 
 labels.txt用于列出所有类别，类别对应行号表示模型训练过程中类别的id(行号从0开始计数)，例如labels.txt为以下内容
 ```
-backgrond
+background
 human
 car
 ```