diff --git a/problems/0001.两数之和.md b/problems/0001.两数之和.md
index 77318294..3d0674ce 100644
--- a/problems/0001.两数之和.md
+++ b/problems/0001.两数之和.md
@@ -134,6 +134,20 @@ func twoSum(nums []int, target int) []int {
     }
     return []int{}
 }
+
+```go
+// 使用map方式解题，降低时间复杂度
+func twoSum(nums []int, target int) []int {
+    m := make(map[int]int)
+    for index, val := range nums {
+        if preIndex, ok := m[target-val]; ok {
+            return []int{preIndex, index}
+        } else {
+            m[val] = index
+        }
+    }
+    return []int{}
+}
 ```
 
 Rust