diff --git a/blog/php-mysql/index.md b/blog/php-mysql/index.md
index d7cb8cbb2fa89e5ec49700259f01bd371ddf58ef..1475f5d670f36f06c5c27703ba38c22fa04d3fe2 100644
--- a/blog/php-mysql/index.md
+++ b/blog/php-mysql/index.md
@@ -36,7 +36,7 @@
 
 17. [高级数据操作-删除数据](blog/php-mysql/sql-senior-delete.md)
 
-[高级数据操作-查询数据](blog/php-mysql/sql-senior-select.md)
+18. [高级数据操作-查询数据](blog/php-mysql/sql-senior-select.md)
 
 [查询中的运算符](blog/php-mysql/sql-operator.md)