diff --git a/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisTransProductServiceImpl.java b/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisTransProductServiceImpl.java
index 905f71de3..75d9ab82e 100644
--- a/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisTransProductServiceImpl.java
+++ b/emis-biz/src/main/java/com/xdadan/erp/emis/service/impl/EmisTransProductServiceImpl.java
@@ -67,10 +67,36 @@ public class EmisTransProductServiceImpl implements IEmisTransProductService
     public int insertEmisTransProduct(EmisTransProduct emisTransProduct)
     {
         // 获取线路编号
-        QueryWrapper<EmisTransProduct> queryWrapper=new QueryWrapper();
-        queryWrapper.eq("trans_line_code",emisTransProduct.getTransLineCode());
-        Long count = emisTransProductMapper.selectCount(queryWrapper);
-        String prodCode=emisTransProduct.getTransLineCode()+"-"+ StringUtils.leftPad(String.valueOf(count),4,"0");
+        QueryWrapper<EmisTransProduct> queryWrapper=new QueryWrapper<>();
+        queryWrapper.likeRight("prod_code",emisTransProduct.getTransLineCode()+"-");
+        queryWrapper.select("prod_code");
+        queryWrapper.orderByDesc("prod_code");
+        queryWrapper.last("LIMIT 1");
+        List<EmisTransProduct> productList = emisTransProductMapper.selectList(queryWrapper);
+        
+        String prodCode;
+        if (productList == null || productList.isEmpty()) {
+            // 如果查询结果为空，使用0000
+            prodCode = emisTransProduct.getTransLineCode()+"-"+"0000";
+        } else {
+            // 获取最大的prod_code，提取数字部分加1
+            String maxProdCode = productList.get(0).getProdCode();
+            String prefix = emisTransProduct.getTransLineCode()+"-";
+            if (maxProdCode != null && maxProdCode.startsWith(prefix)) {
+                String numberPart = maxProdCode.substring(prefix.length());
+                try {
+                    int maxNumber = Integer.parseInt(numberPart);
+                    int newNumber = maxNumber + 1;
+                    prodCode = prefix + StringUtils.leftPad(String.valueOf(newNumber), 4, "0");
+                } catch (NumberFormatException e) {
+                    // 如果解析失败，使用0000
+                    prodCode = emisTransProduct.getTransLineCode()+"-"+"0000";
+                }
+            } else {
+                // 如果格式不匹配，使用0000
+                prodCode = emisTransProduct.getTransLineCode()+"-"+"0000";
+            }
+        }
         emisTransProduct.setProdCode(prodCode);
 
         emisTransProduct.preInsert();