diff --git a/scores/model/score_model.py b/scores/model/score_model.py
index 5a38e60..253b5e6 100644
--- a/scores/model/score_model.py
+++ b/scores/model/score_model.py
@@ -6,9 +6,13 @@ class Score(Base):
     cid = Column(Integer
                  ,primary_key = True
                  ,autoincrement = True
-                 ,comment ='考试序次'
+                 ,comment ='编号'
                  )
-    score = Column(Float,nullable = False)
+    score_num = Column(Integer
+                 ,primary_key = True
+                 ,comment ='考试序次'
+                       )
+    score = Column(Integer,nullable = False)
     subject = Column(String(100)
                    ,nullable = False
                    )