diff --git a/packages_and_settings.tex b/packages_and_settings.tex
index 4bdb694..daa3b18 100644
--- a/packages_and_settings.tex
+++ b/packages_and_settings.tex
@@ -17,7 +17,7 @@
 \usepackage{bicaption}
 
 
-
+\usepackage{titletoc}\contentsmargin{0pt}\renewcommand\contentspage{\thecontentspage}\dottedcontents{section}[1.3em]{}{1.3em}{5pt}\dottedcontents{subsection}[3.5em]{}{2.2em}{5pt}
 
 \captionsetup[figure][bi-second]{name=Figure} %设置图的英文编号前缀
 \captionsetup[table][bi-second]{name=Table} %设置表的英文编号前缀