diff --git a/yuthon_property/models/property_bank_statements.py b/yuthon_property/models/property_bank_statements.py
index 489ca525b..7807e7b1d 100644
--- a/yuthon_property/models/property_bank_statements.py
+++ b/yuthon_property/models/property_bank_statements.py
@@ -275,6 +275,34 @@ class ReceivableModifyLine(models.Model):
                 # 兜底：确保 delivered1 总是被赋值
                 rec.delivered1 = 0
 
+    @api.onchange('reconciliation_date')
+    def _onchange_reconciliation_date(self):
+        """修改核销日期时，根据分组情况同步更新应收款的付款日期"""
+        for record in self:
+            if not record.receivable_id or not record.reconciliation_date:
+                continue
+
+            receivable = record.receivable_id
+            # 查询同一 receivable_id 下的其他修改明细行（排除当前记录）
+            domain = [('receivable_id', '=', receivable.id), ('management_type_id', '=', record.management_type_id.id), ('id', '!=', record.id.origin)]
+            existing_lines = self.env['receivable.modify.line'].search(domain)
+            # 当前组内记录总数（含当前记录）
+            group_count = len(existing_lines) + 1
+            if group_count == 1:
+                # 一组只有一条记录：直接同步 payout_date
+                receivable.payout_date = record.reconciliation_date
+            elif group_count == 2:
+                # 一组有两条记录：仅当修改前的 reconciliation_date
+                # 与 receivable 的 payout_date 相同时才同步
+                old_reconciliation_date = False
+                if record.id.origin:
+                    old_reconciliation_date = self.env['receivable.modify.line'].browse(
+                        record.id.origin
+                    ).reconciliation_date
+
+                if old_reconciliation_date == receivable.payout_date:
+                    receivable.payout_date = record.reconciliation_date
+
     remake = fields.Text(related='receivable_id.remark', string='备注', store=False)
     # lessee_id = fields.Many2one(
     #     "property.tenant.information",