diff --git a/problems/0077.组合.md b/problems/0077.组合.md
index 003373d9..0b289a40 100644
--- a/problems/0077.组合.md
+++ b/problems/0077.组合.md
@@ -436,8 +436,6 @@ func backtrack(n,k,start int,track []int){
 ```
 
 
-
-
 -----------------------
 * 作者微信：[程序员Carl](https://mp.weixin.qq.com/s/b66DFkOp8OOxdZC_xLZxfw)
 * B站视频：[代码随想录](https://space.bilibili.com/525438321)
diff --git a/problems/0077.组合优化.md b/problems/0077.组合优化.md
index 0fb11e53..31acf4a5 100644
--- a/problems/0077.组合优化.md
+++ b/problems/0077.组合优化.md
@@ -193,6 +193,32 @@ class Solution:
     return res
 ```
 Go：
+```Go
+var res [][]int 
+func combine(n int, k int) [][]int {
+   res=[][]int{}
+   if n <= 0 || k <= 0 || k > n {
+		return res
+	}
+    backtrack(n, k, 1, []int{})
+	return res
+}
+func backtrack(n,k,start int,track []int){
+    if len(track)==k{
+        temp:=make([]int,k)
+        copy(temp,track)
+        res=append(res,temp)
+    }
+    if len(track)+n-start+1 < k {
+			return
+		}
+    for i:=start;i<=n;i++{ 
+        track=append(track,i)
+        backtrack(n,k,i+1,track)
+        track=track[:len(track)-1]
+    }
+}
+```