diff --git a/docs/source/sls/algorithm.rst b/docs/source/sls/algorithm.rst
index 0140631e8b71ce1d69038eaf62778236ee70576e..17d585e096160376258523114959644dac060c0e 100644
--- a/docs/source/sls/algorithm.rst
+++ b/docs/source/sls/algorithm.rst
@@ -6,9 +6,9 @@ Instrument correction
 ---------------------
 
 **CSST SLS pipeline**是应用于12块无缝光谱模块探测器的仪器效应改正，包含3个波段，每4块探测器对应1个波段：
-+ GU: ″ field of view from 255-400nm with a plate scale of ″/pixel.
-- GV: ″ field of view from 400-620nm with a plate scale of ″/pixel.
-* GI: ″ field of view from 620-1000nm with a plate scale of ″/pixel.
+ - GU: ″ field of view from 255-400nm with a plate scale of ″/pixel.
+ - GV: ″ field of view from 400-620nm with a plate scale of ″/pixel.
+ - GI: ″ field of view from 620-1000nm with a plate scale of ″/pixel.
 
 pipeline顺序执行一系列的效应改正，生成单次曝光的改正后数据产品。该程序是用Python语言实现，开源地址：。