diff --git a/problems/0077.组合.md b/problems/0077.组合.md
index c00f1efb..c00ff551 100644
--- a/problems/0077.组合.md
+++ b/problems/0077.组合.md
@@ -427,8 +427,8 @@ class Solution:
                 path.append(i)  #处理节点 
                 backtrack(n,k,i+1)  #递归
                 path.pop()  #回溯，撤销处理的节点
-    backtrack(n,k,1)
-    return res
+        backtrack(n,k,1)
+        return res
 ```
 
 
diff --git a/problems/0077.组合优化.md b/problems/0077.组合优化.md
index 4eec1608..24bfc086 100644
--- a/problems/0077.组合优化.md
+++ b/problems/0077.组合优化.md
@@ -187,8 +187,8 @@ class Solution:
                 path.append(i)  #处理节点 
                 backtrack(n,k,i+1)  #递归
                 path.pop()  #回溯，撤销处理的节点
-    backtrack(n,k,1)
-    return res
+        backtrack(n,k,1)
+        return res
 ```
 Go：
 ```Go
diff --git a/problems/0216.组合总和III.md b/problems/0216.组合总和III.md
index 26c630b9..0bb42192 100644
--- a/problems/0216.组合总和III.md
+++ b/problems/0216.组合总和III.md
@@ -323,7 +323,6 @@ class Solution:
             self.backtracking(k, n, i + 1)
             self.path.pop()
             self.sum_now -= i
-        return
 ```
 
 ## Go