diff --git a/README.md b/README.md
index 2308a88..6e1d2ab 100644
--- a/README.md
+++ b/README.md
@@ -40,7 +40,7 @@ node节点 et-1
 <font color="red">**前端保存测点时，需要存储测点公式id**</font>  
 涉及语句:   
 ALTER TABLE "t_device_sensor" ADD COLUMN formula_id INTEGER;
-<img src="README_files/t_device_sensor添加列 formula_id.png">
+<img src="README_files/t_device_sensor添加列formula_id.png">
 
 ### influxDB存储
 数据存储分为三个bucket 功能和es 数据对应