diff --git a/yuthon_property_approval/models/property_lease_contract.py b/yuthon_property_approval/models/property_lease_contract.py
index 1c4142540..0349dbb98 100644
--- a/yuthon_property_approval/models/property_lease_contract.py
+++ b/yuthon_property_approval/models/property_lease_contract.py
@@ -371,16 +371,15 @@ class PropertyLeaseContract(models.Model):
         free_start = start_date  # 免租期开始
         if rent_free_period_month:
             free_start = start_date + relativedelta(months=rent_free_period_month)
-
-        self.sudo().write({'breakdown_ids': [(0, 0, {
-            "unit_price": unit_price,
-            "monthly_amount": monthly_amount,
-            "breakdown_id": self.id,
-            "start_data": start_date,
-            "end_data": free_start - relativedelta(days=1),
-            "month_number": rent_free_period_month,
-            "period_rent": 0,
-        })]})
+            self.sudo().write({'breakdown_ids': [(0, 0, {
+                "unit_price": unit_price,
+                "monthly_amount": monthly_amount,
+                "breakdown_id": self.id,
+                "start_data": start_date,
+                "end_data": free_start - relativedelta(days=1),
+                "month_number": rent_free_period_month,
+                "period_rent": 0,
+            })]})
         # 如果没有递增 那么计算全部
         if not increments_every_few_years:
             # 如果免租期有天那么默认增加一个月
@@ -420,9 +419,9 @@ class PropertyLeaseContract(models.Model):
         else:
             first_years_begin_end = start_date
             # 免递增年份计算
-            if first_years_begin:
+            if first_years_begin > 1:
                 # 免递增结束时间
-                first_years_begin_end = start_date + relativedelta(months=first_years_begin * 12)
+                first_years_begin_end = start_date + relativedelta(months=(first_years_begin -1) * 12)
                 # 免租期结束时间 free_start
                 # 计算免租期和免增期的差值, 如果免租期超过免增期那么不存在免增期
                 if first_years_begin_end > free_start: