diff --git a/src/main/java/com/chaozhanggui/system/cashierservice/service/ProductService.java b/src/main/java/com/chaozhanggui/system/cashierservice/service/ProductService.java
index fbf7e5e..95bcc4b 100644
--- a/src/main/java/com/chaozhanggui/system/cashierservice/service/ProductService.java
+++ b/src/main/java/com/chaozhanggui/system/cashierservice/service/ProductService.java
@@ -945,8 +945,12 @@ public class ProductService {
             }else {
                 jsonArray = new JSONArray();
             }
-            jsonArray.add(tbCashierCart);
-            redisUtil.saveMessage(tableCartKey, jsonArray.toJSONString());
+
+            long count = jsonArray.stream().filter(item -> "-999".equals(((JSONObject) item).getString("productId"))).count();
+            if (count < 1) {
+                jsonArray.add(tbCashierCart);
+                redisUtil.saveMessage(tableCartKey, jsonArray.toJSONString());
+            }
 
             // 保存就餐人数信息
             redisUtil.saveMessage(RedisCst.getCurrentTableSeatCount(choseCountDTO.getShopId(), choseCountDTO.getTableId()),