diff --git a/advanced-math/knowledge/4-indefinite-integral-and-definite-integral/indefinite-integral-and-definite-integral.tex b/advanced-math/knowledge/4-indefinite-integral-and-definite-integral/indefinite-integral-and-definite-integral.tex
index a54ae48..3d9bb79 100644
--- a/advanced-math/knowledge/4-indefinite-integral-and-definite-integral/indefinite-integral-and-definite-integral.tex
+++ b/advanced-math/knowledge/4-indefinite-integral-and-definite-integral/indefinite-integral-and-definite-integral.tex
@@ -17,7 +17,7 @@
 \renewcommand{\baselinestretch}{1.5}
 % 1.5倍行距
 \author{Didnelpsun}
-\title{标题}
+\title{不定积分与定积分}
 \date{}
 \begin{document}
 \maketitle
diff --git a/advanced-math/knowledge/5-differential-equation/differential-equation.tex b/advanced-math/knowledge/5-differential-equation/differential-equation.tex
index a54ae48..85117f4 100644
--- a/advanced-math/knowledge/5-differential-equation/differential-equation.tex
+++ b/advanced-math/knowledge/5-differential-equation/differential-equation.tex
@@ -17,7 +17,7 @@
 \renewcommand{\baselinestretch}{1.5}
 % 1.5倍行距
 \author{Didnelpsun}
-\title{标题}
+\title{微分方程}
 \date{}
 \begin{document}
 \maketitle