diff --git a/Array2D.hpp b/Array2D.hpp
index f546746..5c931cd 100644
--- a/Array2D.hpp
+++ b/Array2D.hpp
@@ -8,7 +8,7 @@
 class Array2D
 {
     int **arr;          // 指针数组退化为二级指针
-    const int row, col; // 二维数组的行和列
+    int row, col; // 二维数组的行和列
 public:
     Array2D(int _row, int _col) : row{_row}, col{_col}
     {