diff --git a/apps/inm/serializers.py b/apps/inm/serializers.py
index cb24b878..76a6586c 100644
--- a/apps/inm/serializers.py
+++ b/apps/inm/serializers.py
@@ -12,6 +12,7 @@ from .models import MIO, MaterialBatch, MIOItem, WareHouse, MIOItemA, MaterialBa
 from django.db import transaction
 from server.settings import get_sysconfig
 from apps.wpmw.models import Wpr
+from decimal import Decimal
 
 
 class WareHourseSerializer(CustomModelSerializer):
@@ -225,7 +226,7 @@ class MIOItemSerializer(CustomModelSerializer):
         ret = super().to_representation(instance)
         ret["price"] = None
         if ret["unit_price"] is not None:
-            ret["price"] = ret["count"] * ret["unit_price"]
+            ret["price"] = Decimal(ret["count"]) * Decimal(ret["unit_price"])
         return ret
     
 class MioItemDetailSerializer(MIOItemSerializer):