diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/BaseQueryWrapper.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/BaseQueryWrapper.java
index 1198fa65..7454bb1f 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/BaseQueryWrapper.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/BaseQueryWrapper.java
@@ -49,6 +49,30 @@ public class BaseQueryWrapper<T extends BaseQueryWrapper<T>> implements CloneSup
 
 //    protected boolean ignoreBlankStrings = false;
 
+    /**
+     * <p>Title: clear. </p>
+     * <p>Description: Default QueryWrapper values. </p>
+     * <p>Notice: When adding new attributes, it is necessary to supplement here. </p>
+     * @author dragon
+     */
+    public void clear() {
+        this.with = null;
+        this.queryTables = null;
+        this.dataSource = null;
+        this.hint = null;
+        this.selectColumns = null;
+        this.joins = null;
+        this.joinTables = null;
+        this.whereQueryCondition = null;
+        this.groupByColumns = null;
+        this.havingQueryCondition = null;
+        this.orderBys = null;
+        this.unions = null;
+        this.limitOffset = null;
+        this.limitRows = null;
+        this.endFragments = null;
+        this.context = null;
+    }
 
     protected T addSelectColumn(QueryColumn queryColumn) {
         if (selectColumns == null) {