diff --git a/yuthon_property_approval/models/property_lease_contract.py b/yuthon_property_approval/models/property_lease_contract.py
index 8a37c3cdd..73d06834e 100644
--- a/yuthon_property_approval/models/property_lease_contract.py
+++ b/yuthon_property_approval/models/property_lease_contract.py
@@ -2603,12 +2603,24 @@ class PropertyManagementBreakdownLine(models.Model):
     management_monthly_amount = fields.Float(string="金额", digits=(16, 2))
     start_data = fields.Date(string="开始日期")
     end_data = fields.Date(string="结束日期")
-    management_month_number = fields.Integer(string="期间月数")
+    management_month_number = fields.Float(string="期间月数", digits=(16, 2))
     management_period_rent = fields.Float(string="期间费用", digits=(16, 2))
 
-    @api.onchange('management_monthly_amount', 'month_number')
+    @api.onchange('start_data', 'end_data')
+    def _onchange_management_month_number(self):
+        if self.start_data and self.end_data:
+            if self.end_data >= self.start_data:
+                total_days = (self.end_data - self.start_data).days + 1
+                start_month_days = calendar.monthrange(self.start_data.year, self.start_data.month)[1]
+                self.management_month_number = round(total_days / start_month_days, 2)
+            else:
+                self.management_month_number = 0
+        else:
+            self.management_month_number = 0
+
+    @api.onchange('management_monthly_amount', 'management_month_number')
     def _onchange_management_amount(self):
-        self.management_period_rent = self.management_monthly_amount * self.management_month_number
+        self.management_period_rent = round(self.management_monthly_amount * self.management_month_number, 2)
 
 
 class PropertyWaterFeeLine(models.Model):