diff --git a/client/python/upbit/models.py b/client/python/upbit/models.py
index 83bfa72..81597a9 100644
--- a/client/python/upbit/models.py
+++ b/client/python/upbit/models.py
@@ -523,6 +523,23 @@ def Order_cancel(self, **kwargs) -> dict:
         future = self.__client.Order.Order_cancel(**kwargs)
         return HTTPFutureExtractor.future_extraction(future)
 
+    def Order_cancel_all(self, **kwargs) -> list:
+        l = []
+
+        while True:
+            future = self.__client.Order.Order_info_all(state="wait")
+            waits = HTTPFutureExtractor.future_extraction(future)
+
+            if len(waits) == 0:
+                break
+
+            l.append(waits)
+
+            for w in waits:
+                future = self.__client.Order.Order_cancel(uuid=w["uuid"])
+
+        return l
+
 
 class Trade:
     """