diff --git a/paper/latex/figures/system_architecture.tex b/paper/latex/figures/system_architecture.tex
index dd990cf..1a08054 100644
--- a/paper/latex/figures/system_architecture.tex
+++ b/paper/latex/figures/system_architecture.tex
@@ -16,7 +16,7 @@
     \node[title, above=0.1cm of business.north west, anchor=west] {业务逻辑层};
     
     \node[layer, fill=orange!10, below=0.5cm of business] (data) {};
-    \node[title, above=0.1cm of data.north west, anchor=west] {数据访问层模块};
+    \node[title, above=0.1cm of data.north west, anchor=west] {数据访问层};
     
     % 表现层模块
     \node[module, fill=blue!20] (ui1) at (-3.5, 1.5) {模型管理};