diff --git a/doc/README.md b/doc/README.md
index c1ffb30..c29f4a6 100644
--- a/doc/README.md
+++ b/doc/README.md
@@ -11,7 +11,7 @@
 | /luckless_users | GET      |                                          | {"status": 200, "msg": "success", "data": [{"uid":uid, "name":name, "role":role}]} | 获取未中奖用户列表                          |
 | /add_awards     | POST     | [{"award_name":string, "award_capacity":int}] | {"status": 200, "msg": "success", "data": None} | 添加新奖品                              |
 | /add_award      | GET      | award_name=string& award_capacity=int    | {"status": 200, "msg": "success", "data": None} | 添加单个奖品                             |
-| /award          | GET      | award_id=int                             | {"status": 200, "msg": "success", "data": {"award_id":award_id, "award_name":award_name, "award_capacity":award_capacity}} | 获取指定奖项信息                           |
+| /award          | GET      | award_id=string                          | {"status": 200, "msg": "success", "data": {"award_id":award_id, "award_name":award_name, "award_capacity":award_capacity}} | 获取指定奖项信息                           |
 | /awards         | GET      |                                          | {"status": 200, "msg": "success", "data": [{"award_id":award_id, "award_name":award_name, "award_capacity":award_capacity}]} | 获取所有奖项列表                           |
 | /reset          | GET      |                                          | {"status": 200, "msg": "success", "data": None} | 重置所有数据                             |
 
diff --git a/src/random_selector.py b/src/random_selector.py
index 5e22b9e..f20e86b 100644
--- a/src/random_selector.py
+++ b/src/random_selector.py
@@ -13,7 +13,7 @@ class RandomSelector(object):
     def randselect(self, items, num):
         _items = items.copy()
         self._selector.shuffle(_items)
-        return [_items[self._selector.randrange(len(_items))] for _ in range(num)]
+        return [_items.pop(self._selector.randrange(len(_items))) for _ in range(num)]
 
 
 def randomselect(elapsed_ms, items, select_num):