diff --git a/0111-minimum-depth-of-binary-tree/0111-minimum-depth-of-binary-tree.py b/0111-minimum-depth-of-binary-tree/0111-minimum-depth-of-binary-tree.py
new file mode 100644
index 0000000..2a1199e
--- /dev/null
+++ b/0111-minimum-depth-of-binary-tree/0111-minimum-depth-of-binary-tree.py
@@ -0,0 +1,20 @@
+# Definition for a binary tree node.
+# class TreeNode(object):
+#     def __init__(self, val=0, left=None, right=None):
+#         self.val = val
+#         self.left = left
+#         self.right = right
+class Solution(object):
+    def minDepth(self, root):
+        """
+        :type root: TreeNode
+        :rtype: int
+        """
+        if not root:
+            return 0 
+        if not root.left:
+            return 1 + self.minDepth(root.right)
+        if not root.right:
+            return 1 + self.minDepth(root.left)
+        return 1 + min(self.minDepth(root.left), self.minDepth(root.right))
+