diff --git a/lib/report_generator.py b/lib/report_generator.py
index 5415412..0fbe383 100644
--- a/lib/report_generator.py
+++ b/lib/report_generator.py
@@ -384,8 +384,12 @@ def generate_daily_report(config_id, start_time=None, end_time=None):
             print(f"[日报生成] 时段配置: {time_periods_config}")
             time_period_electricity = calculate_time_period_electricity(orders, time_periods_config)
             
-            # 将分时段电量添加到订单数据中
+            # 将分时段电量添加到订单数据中（仅对驿来特订单，特来电订单已有数据）
             for order in orders:
+                # 特来电订单已有尖峰平谷电量数据，不需要重新计算
+                if order.get('data_source') == '特来电':
+                    continue
+                    
                 order_no = order.get('order_no')
                 if order_no and order_no in time_period_electricity:
                     ep = time_period_electricity[order_no]
@@ -396,12 +400,12 @@ def generate_daily_report(config_id, start_time=None, end_time=None):
             
             print(f"[日报生成] 已计算 {len(time_period_electricity)} 条订单的分时段电量")
         
-        # 计算求和
+        # 计算求和（保留三位小数）
         sum_results = {}
         for field in sum_fields:
             if field in orders[0]:
                 total = sum(float(order.get(field, 0) or 0) for order in orders)
-                sum_results[field] = total
+                sum_results[field] = round(total, 3)
         
         # 构建ID到名称的映射
         id_name_maps = build_id_to_name_map(orders, selected_fields)
@@ -582,7 +586,7 @@ def generate_excel(orders, selected_fields, sum_fields, sum_results,
                 cell = ws.cell(row=sum_row, column=col_idx)
                 cell.value = sum_results[field]
                 cell.font = Font(bold=True)
-                cell.number_format = '0.00'
+                cell.number_format = '0.000'  # 保留三位小数
     
     # 调整列宽
     for col_idx, field in enumerate(selected_fields, 1):