diff --git a/Myshipping.Application/Service/BookingCustomerOrder/BookingCustomerOrderService.cs b/Myshipping.Application/Service/BookingCustomerOrder/BookingCustomerOrderService.cs
index 3b13c688..60e238eb 100644
--- a/Myshipping.Application/Service/BookingCustomerOrder/BookingCustomerOrderService.cs
+++ b/Myshipping.Application/Service/BookingCustomerOrder/BookingCustomerOrderService.cs
@@ -1809,6 +1809,11 @@ namespace Myshipping.Application
                 throw Oops.Bah($"未找到匹配的船司代码：{input.CARRIERID}");
             }
 
+            // 2024-4-9：中远约号最长8位
+            if (input.CARRIERID == "COSCO" && input.CONTRACTNO.Length > 8)
+            {
+                throw Oops.Bah($"约号超长，【中远】约号最长8位，请检查");
+            }
 
             if (!input.ETD.HasValue)
             {