diff --git a/021_Merge_Two_Shorted_List.py b/021_Merge_Two_Shorted_List.py
new file mode 100644
index 0000000..415a1e4
--- /dev/null
+++ b/021_Merge_Two_Shorted_List.py
@@ -0,0 +1,39 @@
+# Definition for singly-linked list.
+class ListNode:
+    def __init__(self, x):
+        self.val = x
+        self.next = None
+
+    def __repr__(self):
+        if self:
+            return "{} -> {}".format(self.val, self.next)
+
+
+class Solution:
+    def mergeTwoLists(self, l1, l2):
+        dummy = ListNode(0)
+        current = dummy
+
+        while l1 and l2:
+            if l1.val < l2.val:
+                current.next = l1
+                l1 = l1.next
+            else:
+                current.next = l2
+                l2 = l2.next
+            current = current.next
+
+        if l1:
+            current.next = l1
+        else:
+            current.next = l2
+
+        return dummy.next
+
+
+if __name__ == "__main__":
+    l1 = ListNode(0)
+    l1.next = ListNode(1)
+    l2 = ListNode(2)
+    l2.next = ListNode(3)
+    print(Solution().mergeTwoLists(l1, l2))