diff --git a/src/main/java/io/mycat/server/ServerConnection.java b/src/main/java/io/mycat/server/ServerConnection.java
index 4c3b39b8adc61304267db672032172a835d4cdfd..99c17fd132f75d201e513bc817e473441ba51e10 100644
--- a/src/main/java/io/mycat/server/ServerConnection.java
+++ b/src/main/java/io/mycat/server/ServerConnection.java
@@ -327,6 +327,13 @@ public class ServerConnection extends FrontendConnection {
 		return ServerParse.SELECT == type || ServerParse.INSERT == type || ServerParse.UPDATE == type || ServerParse.DELETE == type || ServerParse.DDL == type;
 	}
 
+	/**
+	 * 判断sql是否为CRUD操作，mycat会将一部分SET操作转换为UPDATE操作(io.mycat.server.handler.SetHandler)如：set session sql_mode='HIGH_NOT_PRECEDENCE'，从而导致解析错误，所以UPDATE特殊判断
+	 */
+	private boolean isCRUDSql(int type, String sql) {
+		return ServerParse.SELECT == type || ServerParse.INSERT == type || ServerParse.UPDATE == ServerParse.parse(sql) || ServerParse.DELETE == type;
+	}
+
 	public RouteResultset routeSQL(String sql, int type) {
 
 		// 检查当前使用的DB
@@ -375,7 +382,7 @@ public class ServerConnection extends FrontendConnection {
 		// 路由计算
 		RouteResultset rrs = null;
 		try {
-			boolean sqlPass = !sql.contains("information_schema") && (type == ServerParse.DELETE || type == ServerParse.INSERT || type == ServerParse.UPDATE || type == ServerParse.SELECT);
+			boolean sqlPass = !sql.contains("information_schema") && isCRUDSql(type, sql);
 			//zrx 如果是增删查改
 			if (sqlPass) {
 				// zrx 路由之前修改sql