diff --git a/README.md b/README.md
index 96852d70..ac33b586 100644
--- a/README.md
+++ b/README.md
@@ -107,7 +107,6 @@
 5. [数组：209.长度最小的子数组](./problems/0209.长度最小的子数组.md)
 6. [数组：区间和](./problems/kamacoder/0058.区间和.md)
 6. [数组：59.螺旋矩阵II](./problems/0059.螺旋矩阵II.md)
-7. [数组：区间和](./problems/kamacoder/0058.区间和.md)
 8. [数组：开发商购买土地](./problems/kamacoder/0044.开发商购买土地.md)
 9. [数组：总结篇](./problems/数组总结篇.md)