diff --git a/invert-binary-tree/yuseok89.py b/invert-binary-tree/yuseok89.py
new file mode 100644
index 0000000000..bafaa0580c
--- /dev/null
+++ b/invert-binary-tree/yuseok89.py
@@ -0,0 +1,21 @@
+# TC: O(N)
+# SC: O(N)
+# 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
+class Solution:
+    def invertTree(self, root: Optional[TreeNode]) -> Optional[TreeNode]:
+
+        if not root:
+            return None
+        else:
+            cur_node = TreeNode(root.val)
+
+            cur_node.right = self.invertTree(root.left)
+            cur_node.left = self.invertTree(root.right)
+
+            return cur_node
+