diff --git a/problems/0078.子集.md b/problems/0078.子集.md
index 3e98311e..a9ffd696 100644
--- a/problems/0078.子集.md
+++ b/problems/0078.子集.md
@@ -180,10 +180,6 @@ class Solution {
     List<List<Integer>> result = new ArrayList<>();// 存放符合条件结果的集合
     LinkedList<Integer> path = new LinkedList<>();// 用来存放符合条件结果
     public List<List<Integer>> subsets(int[] nums) {
-        if (nums.length == 0){
-            result.add(new ArrayList<>());
-            return result;
-        }
         subsetsHelper(nums, 0);
         return result;
     }