diff --git a/paper/latex/main.tex b/paper/latex/main.tex
index b41a770..1e7cbf4 100644
--- a/paper/latex/main.tex
+++ b/paper/latex/main.tex
@@ -5,12 +5,6 @@
 %\graphicspath{{chapter/}{figures/}}
 \usepackage{CJK}
 \usepackage{amsmath}%数学
-\usepackage{titlesec}
-
-\newcounter{mychapter}
-\titleformat{\section}
-  {\normalfont\Large\bfseries}{\stepcounter{mychapter}第\themychapter 章}{1em}{}
-
 
 %\usepackage[colorlinks,linkcolor=red]{hyperref}%超链接
 
@@ -97,6 +91,14 @@
 }
 
 
+\usepackage{titlesec}
+\titleformat{\section}{\centering\Large\bfseries}{第\,\thesection\,章}{1em}{}
+
+
+\usepackage{titletoc}
+\titlecontents{section}[0pt]{\addvspace{1.5pt}\filright\bf}
+{\contentspush{第\thecontentslabel\ 章\quad}}
+{}{\titlerule*[8pt]{.}\contentspage}
 
 
 %设置页面格式