diff --git a/yuthon_report/models/receivable_flow_report.py b/yuthon_report/models/receivable_flow_report.py
index 026984211..37e7515fc 100644
--- a/yuthon_report/models/receivable_flow_report.py
+++ b/yuthon_report/models/receivable_flow_report.py
@@ -45,21 +45,49 @@ class ReceivableFlowReport(models.Model):
             domain.append(('company_id', '=', company_id))
 
         receivables = self.search(domain, order="due_date asc")
+        rec_ids = receivables.ids
+
+        # ===== 批量预加载，避免N+1查询 =====
+        # 1. 批量查收款明细行
+        all_modify_lines = self.env['receivable.modify.line'].search([
+            ('receivable_id', 'in', rec_ids),
+            ('reconciliation_date', '!=', False),
+        ])
+        # 按 receivable_id 分组
+        modify_map = {}  # {receivable_id: [lines]}
+        for ml in all_modify_lines:
+            modify_map.setdefault(ml.receivable_id.id, []).append(ml)
+
+        # 2. 批量查违约金wizard
+        all_wizards = self.env['penalty.line.wizard'].search([
+            ('receivable_id', 'in', rec_ids),
+        ])
+        # 按 receivable_id 分组，并预取 pay_line_ids
+        wizard_map = {}  # {receivable_id: [wizards]}
+        for wz in all_wizards:
+            wizard_map.setdefault(wz.receivable_id.id, []).append(wz)
+        # 预取所有 pay_line_ids
+        all_pay_lines = all_wizards.mapped('pay_line_ids')
+        # 按 wizard_id 分组
+        pay_line_map = {}  # {wizard_id: [pay_lines]}
+        for pl in all_pay_lines:
+            pay_line_map.setdefault(pl.penalty_id.id, []).append(pl)
+        # ===== 预加载结束 =====
 
         rows = []
 
         for idx, rec in enumerate(receivables, start=1):
-            # 获取收款信息
-            modify_lines = self.env['receivable.modify.line'].search([
-                ('receivable_id', '=', rec.id),
-                ('reconciliation_date', '!=', False)
-            ])
+            # 获取收款信息（从预加载字典取）
+            modify_lines = modify_map.get(rec.id, [])
             
             # 计算收款总金额
             total_collected = sum(line.amount for line in modify_lines)
             
             # 获取最新的收款时间和备注
-            latest_payment = modify_lines.sorted(key=lambda l: l.reconciliation_date or datetime.datetime.min, reverse=True)
+            latest_payment = sorted(
+                [l for l in modify_lines if l.reconciliation_date],
+                key=lambda l: l.reconciliation_date, reverse=True
+            )
             payment_date = latest_payment[0].reconciliation_date if latest_payment else None
             payment_remark = latest_payment[0].bank_id.remake if latest_payment and latest_payment[0].bank_id else ""
             
@@ -161,15 +189,20 @@ class ReceivableFlowReport(models.Model):
             penalty_amount = days_diff * per_day
             penalty_amount = penalty_amount or rec.penalty or rec.original_amount or 0.0
             
-            # 获取违约金收款信息
-            wizards = self.env['penalty.line.wizard'].search([('receivable_id', '=', rec.id)])
-            penalty_pay_lines = wizards.mapped('pay_line_ids')
+            # 获取违约金收款信息（从预加载字典取）
+            wz_list = wizard_map.get(rec.id, [])
+            penalty_pay_lines = []
+            for wz in wz_list:
+                penalty_pay_lines.extend(pay_line_map.get(wz.id, []))
             
             # 计算违约金收款金额
             total_penalty_collected = sum(line.amount for line in penalty_pay_lines)
             
             # 获取最新的违约金收款时间
-            latest_penalty_payment = penalty_pay_lines.sorted(key=lambda l: l.date or datetime.datetime.min, reverse=True)
+            latest_penalty_payment = sorted(
+                [l for l in penalty_pay_lines if l.date],
+                key=lambda l: l.date, reverse=True
+            )
             penalty_payment_date = latest_penalty_payment[0].date if latest_penalty_payment else None
             
             rows.append({