diff --git a/models/pricing_program.json b/models/pricing_program.json
index 638d7b6..bf48c2e 100644
--- a/models/pricing_program.json
+++ b/models/pricing_program.json
@@ -44,7 +44,8 @@
             "name": "discount",
             "title": "供应商折扣",
             "type": "float",
-            "length": 18
+            "length": 18,
+            "dec": 2
         },
         {
             "name": "description",