diff --git a/src/main/java/com/glxp/api/req/dev/DeviceChangeOrderParam.java b/src/main/java/com/glxp/api/req/dev/DeviceChangeOrderParam.java
index 24a93881c..7fcb812c7 100644
--- a/src/main/java/com/glxp/api/req/dev/DeviceChangeOrderParam.java
+++ b/src/main/java/com/glxp/api/req/dev/DeviceChangeOrderParam.java
@@ -132,7 +132,7 @@ public class DeviceChangeOrderParam {
          * 设备编码
          */
         @NotBlank(message = "设备编码不能为空")
-        @Pattern(regexp = "^[A-Za-z0-9]{1,20}$", message = "设备编码只能为(大小写字母、数字)组合或其中一项，最多20个字符")
+        @Pattern(regexp = "^[A-Za-z0-9_]{1,20}$", message = "设备编码只能为(大小写字母、数字、下划线)组合或其中一项，最多20个字符")
         private String deviceCode;
 
         /**