diff --git a/YLErpDAL/Modules/AppModule/EmailTemplateService.cs b/YLErpDAL/Modules/AppModule/EmailTemplateService.cs
index aeca2cbc..6059858d 100644
--- a/YLErpDAL/Modules/AppModule/EmailTemplateService.cs
+++ b/YLErpDAL/Modules/AppModule/EmailTemplateService.cs
@@ -95,7 +95,9 @@ namespace YLErp.Modules.AppModule
 
             string replace(Match m)
             {
-                switch (m.Groups[1].Value)
+                // 同时兼容标准 {{变量}} 和历史模板中的 {变量} 写法。
+                var variableName = m.Groups[1].Success ? m.Groups[1].Value : m.Groups[2].Value;
+                switch (variableName)
                 {
                     case "客户名称":
                         return reqModel.ClientName;
@@ -105,11 +107,16 @@ namespace YLErp.Modules.AppModule
                         return reqModel.DocNumber;
                     case "交易列表":
                         return reqModel.TradeList;
+                    // 结算邮件扩展变量：可同时用于邮件标题和正文。
+                    case "交易编号":
+                        return reqModel.TradeNumber ?? string.Empty;
+                    case "平仓总额":
+                        return reqModel.UnwindTotalAmount ?? string.Empty;
                 }
                 return string.Empty;
             }
 
-            var pattern = @"\{\{(客户名称|交易日期|文档编号|交易列表)\}\}";
+            var pattern = @"\{\{(客户名称|交易日期|文档编号|交易列表|交易编号|平仓总额)\}\}|\{(客户名称|交易日期|文档编号|交易列表|交易编号|平仓总额)\}";
 
             var result = new MailInfoResultModel
             {
@@ -146,6 +153,16 @@ namespace YLErp.Modules.AppModule
         /// {{交易列表}}
         /// </summary>
         public string TradeList { get; set; }
+
+        /// <summary>
+        /// {{交易编号}}：当前客户在本次结算日邮件中涉及的交易编号，多个编号以逗号分隔。
+        /// </summary>
+        public string TradeNumber { get; set; }
+
+        /// <summary>
+        /// {{平仓总额}}：当前客户在本次结算日邮件中的平仓金额合计，使用客户视角。
+        /// </summary>
+        public string UnwindTotalAmount { get; set; }
     }
 
     /// <summary>
diff --git a/YLErpDAL/Modules/ReportModule/SettleBillService.cs b/YLErpDAL/Modules/ReportModule/SettleBillService.cs
index 7acd9099..127393dc 100644
--- a/YLErpDAL/Modules/ReportModule/SettleBillService.cs
+++ b/YLErpDAL/Modules/ReportModule/SettleBillService.cs
@@ -166,13 +166,17 @@ namespace YLErp.Modules.ReportModule
                                 fileList.Add(Path.ChangeExtension(docInfo.AbsolutePath, extension));
                             }
                         }
-                        //组织邮件主体
-                        var mailInfo = EmailTemplateService.GenerateMailInfo(useTemplate.Value, new MailInfoRequestModel
+                        // 根据当前客户的结算确认书准备交易编号和平仓总额变量。
+                        var settlementRows = SettlementMailTemplateHelper.GetSettlementRows(DbContext, SettleBills, client.id);
+                        var mailRequest = new MailInfoRequestModel
                         {
                             ClientName = client.Name,
                             TradeDate = valueDate.ToString("yyyy-MM-dd"),
                             DocNumber = SettleBills.Count > 0 ? SettleBills[0].Code : string.Empty
-                        }) ?? new MailInfoResultModel
+                        };
+                        SettlementMailTemplateHelper.PopulateSettlementFields(mailRequest, settlementRows);
+                        //组织邮件主体
+                        var mailInfo = EmailTemplateService.GenerateMailInfo(useTemplate.Value, mailRequest) ?? new MailInfoResultModel
                         {
                             Body = string.Empty,
                             Title = "清算确认书-" + valueDate.ToString("yyyy-MM-dd")
@@ -316,7 +320,9 @@ namespace YLErp.Modules.ReportModule
                 foreach (var client in clientListOn)
                 {
                     var SettleBills = theDaySettleDocList.Where(t => t.SellerId == client.id || t.BuyerId == client.id).ToList();
-                    var res = ts.Where(O => O.trade.ClientId == client.id).ToList();
+                    // 批量查询包含整个日期区间，此处仅保留当前结算日的数据。
+                    var res = SettlementMailTemplateHelper.ForValueDate(
+                        ts.Where(O => O.trade.ClientId == client.id), valueDate);
                     if (SettleBills.Count > 0)
                     {
                         var fileList = new List<string>();
@@ -338,14 +344,16 @@ namespace YLErp.Modules.ReportModule
                         var sb = new StringBuilder();
                         var instrumentTypeArr = new List<string>() { ConsGlobal.InstrumentType.Stock, ConsGlobal.InstrumentType.StockIF };
                         SendEmailSettleBillHtml(sb, res);
-                        //组织邮件主体
-                        var mailInfo = EmailTemplateService.GenerateMailInfo(tempalte.Value, new MailInfoRequestModel
+                        var mailRequest = new MailInfoRequestModel
                         {
                             ClientName = client.Name,
                             TradeDate = valueDate.ToString("yyyy-MM-dd"),
                             TradeList = sb.ToString(),
                             DocNumber = SettleBills.Count > 0 ? SettleBills[0].Code : string.Empty
-                        }) ?? new MailInfoResultModel
+                        };
+                        SettlementMailTemplateHelper.PopulateSettlementFields(mailRequest, res);
+                        //组织邮件主体
+                        var mailInfo = EmailTemplateService.GenerateMailInfo(tempalte.Value, mailRequest) ?? new MailInfoResultModel
                         {
                             Body = string.Empty,
                             Title = "清算确认书-" + valueDate.ToString("yyyy-MM-dd")
diff --git a/YLErpDAL/Modules/ReportModule/UnwindReportService.cs b/YLErpDAL/Modules/ReportModule/UnwindReportService.cs
index 7dea4eda..decc15f4 100644
--- a/YLErpDAL/Modules/ReportModule/UnwindReportService.cs
+++ b/YLErpDAL/Modules/ReportModule/UnwindReportService.cs
@@ -425,13 +425,17 @@ namespace YLErp.Modules.ReportModule
 
                     if (fileList.Count == 0) { continue; }
 
-                    //组织邮件主体
-                    var mailInfo = EmailTemplateService.GenerateMailInfo(useTemplate.Value, new MailInfoRequestModel
+                    // 根据当前客户的提前终止确认书准备交易编号和平仓总额变量。
+                    var settlementRows = SettlementMailTemplateHelper.GetSettlementRows(DbContext, SettleBills, client.id);
+                    var mailRequest = new MailInfoRequestModel
                     {
                         ClientName = client.Name,
                         TradeDate = valueDate.ToString("yyyy-MM-dd"),
                         DocNumber = SettleBills.Count > 0 ? SettleBills[0].Code : string.Empty
-                    }) ?? new MailInfoResultModel
+                    };
+                    SettlementMailTemplateHelper.PopulateSettlementFields(mailRequest, settlementRows);
+                    //组织邮件主体
+                    var mailInfo = EmailTemplateService.GenerateMailInfo(useTemplate.Value, mailRequest) ?? new MailInfoResultModel
                     {
                         Body = string.Empty,
                         Title = "清算确认书-" + valueDate.ToString("yyyy-MM-dd")
@@ -601,7 +605,9 @@ trades.GroupBy(O => new { UnderlyingInstrumentType = instrumentTypeArr.Contains(
                 foreach (var client in clientListOn)
                 {
                     var SettleBills = theDaySettleDocList.Where(t => t.SellerId == client.id || t.BuyerId == client.id).ToList();
-                    var res = ts.Where(O => O.trade.ClientId == client.id).ToList();
+                    // 批量查询包含整个日期区间，此处仅保留当前结算日的数据。
+                    var res = SettlementMailTemplateHelper.ForValueDate(
+                        ts.Where(O => O.trade.ClientId == client.id), valueDate);
                     if (SettleBills.Count < 1)
                     {
                         continue;
@@ -627,14 +633,16 @@ trades.GroupBy(O => new { UnderlyingInstrumentType = instrumentTypeArr.Contains(
 
                     var sb = new StringBuilder();
                     SendEmailSettleBillHtml(sb, res);
-                    //组织邮件主体
-                    var mailInfo = EmailTemplateService.GenerateMailInfo(tempalte.Value, new MailInfoRequestModel
+                    var mailRequest = new MailInfoRequestModel
                     {
                         ClientName = client.Name,
                         TradeDate = valueDate.ToString("yyyy-MM-dd"),
                         TradeList = sb.ToString(),
                         DocNumber = SettleBills.Count > 0 ? SettleBills[0].Code : string.Empty
-                    }) ?? new MailInfoResultModel
+                    };
+                    SettlementMailTemplateHelper.PopulateSettlementFields(mailRequest, res);
+                    //组织邮件主体
+                    var mailInfo = EmailTemplateService.GenerateMailInfo(tempalte.Value, mailRequest) ?? new MailInfoResultModel
                     {
                         Body = string.Empty,
                         Title = "清算确认书-" + valueDate.ToString("yyyy-MM-dd")
@@ -889,13 +897,17 @@ trades.GroupBy(O => new { UnderlyingInstrumentType = instrumentTypeArr.Contains(
                     }
                     if (fileList.Count == 0) { continue; }
 
-                    //组织邮件主体
-                    var mailInfo = EmailTemplateService.GenerateMailInfo(useTemplate.Value, new MailInfoRequestModel
+                    // 合并发送时按当前客户附件反查记录，确保模板变量与附件范围一致。
+                    var settlementRows = SettlementMailTemplateHelper.GetSettlementRows(DbContext, SettleBills, client.id);
+                    var mailRequest = new MailInfoRequestModel
                     {
                         ClientName = client.Name,
                         TradeDate = valueDate.ToString("yyyy-MM-dd"),
                         DocNumber = SettleBills.Count > 0 ? SettleBills[0].Code : string.Empty
-                    }) ?? new MailInfoResultModel
+                    };
+                    SettlementMailTemplateHelper.PopulateSettlementFields(mailRequest, settlementRows);
+                    //组织邮件主体
+                    var mailInfo = EmailTemplateService.GenerateMailInfo(useTemplate.Value, mailRequest) ?? new MailInfoResultModel
                     {
                         Body = string.Empty,
                         Title = "清算确认书-" + valueDate.ToString("yyyy-MM-dd")
diff --git a/YLErpWeb/Areas/Admin/Views/OtcConfig/MailTemplate.cshtml b/YLErpWeb/Areas/Admin/Views/OtcConfig/MailTemplate.cshtml
index e62911ca..047ef3ae 100644
--- a/YLErpWeb/Areas/Admin/Views/OtcConfig/MailTemplate.cshtml
+++ b/YLErpWeb/Areas/Admin/Views/OtcConfig/MailTemplate.cshtml
@@ -20,11 +20,11 @@
             </select>
         </div>
         <div class="mb-4">
-            <label>邮件标题模板(变量参数:{{客户名称}},{{交易日期}},{{文档编号}})</label>
+            <label>邮件标题模板(变量参数:{{客户名称}},{{交易日期}},{{文档编号}},{{交易编号}},{{平仓总额}})</label>
             <input type="text" name="TitleTemplate" id="TitleTemplate" class="form-control" />
         </div>
         <div class="mb-4">
-            <label>邮件内容模板(变量参数:{{客户名称}},{{交易日期}},{{文档编号}})</label>
+            <label>邮件内容模板(变量参数:{{客户名称}},{{交易日期}},{{文档编号}},{{交易编号}},{{平仓总额}})</label>
             <div id="editor"></div>
         </div>
         <div class="mb-4">