diff --git a/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-seata/src/main/java/com/alibaba/cloud/seata/web/SeataHandlerInterceptor.java b/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-seata/src/main/java/com/alibaba/cloud/seata/web/SeataHandlerInterceptor.java
index 24ca0622..5b83b71f 100644
--- a/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-seata/src/main/java/com/alibaba/cloud/seata/web/SeataHandlerInterceptor.java
+++ b/spring-cloud-alibaba-starters/spring-cloud-starter-alibaba-seata/src/main/java/com/alibaba/cloud/seata/web/SeataHandlerInterceptor.java
@@ -39,10 +39,10 @@ public class SeataHandlerInterceptor implements HandlerInterceptor {
 
 	private static final Logger log = LoggerFactory
 			.getLogger(SeataHandlerInterceptor.class);
-	
-	public static final String BIND_XID = "BIND_XID";
 
-	public static final String UNBIND_XID = "UNBIND_XID";
+    private static final String BIND_XID = "BIND_XID";
+
+    private static final String UNBIND_XID = "UNBIND_XID";
 
 	@Override
 	public boolean preHandle(HttpServletRequest request, HttpServletResponse response,