diff --git a/src/数字操作/q258_各位相加/Solution.py b/src/数字操作/q258_各位相加/Solution.py
new file mode 100644
index 0000000..7094186
--- /dev/null
+++ b/src/数字操作/q258_各位相加/Solution.py
@@ -0,0 +1,17 @@
+class Solution:
+    def addAll(self,num:int) ->int:
+        res = 0
+        while num>0:
+            res+=num%10
+            num = num//10
+            print(num)
+        print(res)
+        return res
+    def addDigits(self, num: int) -> int:
+        if num//10==0:
+            return num
+        res = self.addAll(num)
+        print(res)
+        while res//10!=0:
+            res = self.addAll(res)
+        return res