diff --git a/problems/0100.相同的树.md b/problems/0100.相同的树.md
index 4b6eb7aa..0057a85e 100644
--- a/problems/0100.相同的树.md
+++ b/problems/0100.相同的树.md
@@ -237,6 +237,26 @@ class Solution:
         return True
 ```
 Go：
+> 递归法
+```go
+func isSameTree(p *TreeNode, q *TreeNode) bool {
+    if p != nil && q == nil {
+        return false
+    }
+    if p == nil && q != nil {
+        return false
+    }
+    if p == nil && q == nil {
+        return true
+    }
+    if p.Val != q.Val {
+        return false
+    }
+    Left := isSameTree(p.Left, q.Left)
+    Right := isSameTree(p.Right, q.Right)
+    return Left && Right
+}
+```
 
 JavaScript：