diff --git a/problems/0046.全排列.md b/problems/0046.全排列.md
index e08aec94..fb70be41 100644
--- a/problems/0046.全排列.md
+++ b/problems/0046.全排列.md
@@ -136,6 +136,8 @@ public:
     }
 };
 ```
+* 时间复杂度: O(n!)
+* 空间复杂度: O(n)
 
 ## 总结