diff --git a/100.相同的树.py b/100.相同的树.py
new file mode 100644
index 0000000..e2b7089
--- /dev/null
+++ b/100.相同的树.py
@@ -0,0 +1,29 @@
+#
+# @lc app=leetcode.cn id=100 lang=python3
+#
+# [100] 相同的树
+#
+
+# @lc code=start
+# Definition for a binary tree node.
+# class TreeNode:
+#     def __init__(self, val=0, left=None, right=None):
+#         self.val = val
+#         self.left = left
+#         self.right = right
+
+from utils import *
+
+
+class Solution:
+    def isSameTree(self, p: TreeNode, q: TreeNode) -> bool:
+        if not p and not q:
+            return True
+        if not p or not q:
+            return False
+        if p.val != q.val:
+            return False
+        return self.isSameTree(p.left, q.left) and self.isSameTree(p.right, q.right)
+
+
+# @lc code=end