diff --git a/docs/paper/main.pdf b/docs/paper/main.pdf
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@@ -63,7 +63,7 @@
 \begin{document}
 \setcounter{page}{1}
 \begin{center}
- {\heiti\zihao{3} 基于集合估计与覆盖优化的\\[0.3em]无线电干扰源自动定位清除}
+ {\heiti\zihao{3} 基于集合估计与覆盖优化的无线电干扰源自动定位清除}
 \end{center}
 \vspace{0.8em}
 \begin{center}