diff --git a/apps/wpm/models.py b/apps/wpm/models.py
index 4a02cddf..61985ea9 100644
--- a/apps/wpm/models.py
+++ b/apps/wpm/models.py
@@ -109,7 +109,7 @@ class WMaterial(CommonBDModel):
 
     @property
     def count_working(self):
-        return Mlogb.objects.filter(wm_in=self, mlog__work_end_time__isnull=True).aggregate(count=Sum('count_use'))['count'] or 0
+        return int(Mlogb.objects.filter(wm_in=self, mlog__work_end_time__isnull=True).aggregate(count=Sum('count_use'))['count']) or 0
 
 class Fmlog(CommonADModel):
     route = models.ForeignKey(Route, verbose_name='生产路线', on_delete=models.SET_NULL, null=True, blank=True)