diff --git a/jsowell-quartz/src/main/java/com/jsowell/quartz/task/JsowellTask.java b/jsowell-quartz/src/main/java/com/jsowell/quartz/task/JsowellTask.java
index a3aedb869..ad5697730 100644
--- a/jsowell-quartz/src/main/java/com/jsowell/quartz/task/JsowellTask.java
+++ b/jsowell-quartz/src/main/java/com/jsowell/quartz/task/JsowellTask.java
@@ -898,7 +898,9 @@ public class JsowellTask {
             return null;
         }
         int index = orderNo.indexOf("_");
-        return index > 0 ? orderNo.substring(0, index) : orderNo;
+        String orderCode = index > 0 ? orderNo.substring(0, index) : orderNo;
+        // order_code 字段长度限制为 16，超长则无法匹配订单，返回 null
+        return orderCode.length() <= 16 ? orderCode : null;
     }
 
     private String normalizeHeader(String header) {