diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryTable.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryTable.java
index 997ff216..19ce188b 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryTable.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/query/QueryTable.java
@@ -41,6 +41,7 @@ public class QueryTable implements CloneSupport<QueryTable> {
         this.tableDefHashCode = tableDef.hashCode();
         this.schema = tableDef.getSchema();
         this.name = tableDef.getTableName();
+        this.alias = tableDef.getAlias();
     }
 
     public QueryTable(String name) {
diff --git a/mybatis-flex-core/src/main/java/com/mybatisflex/core/table/TableDef.java b/mybatis-flex-core/src/main/java/com/mybatisflex/core/table/TableDef.java
index 07bd1fc4..17c5fbce 100644
--- a/mybatis-flex-core/src/main/java/com/mybatisflex/core/table/TableDef.java
+++ b/mybatis-flex-core/src/main/java/com/mybatisflex/core/table/TableDef.java
@@ -24,16 +24,24 @@ import java.io.Serializable;
  */
 public class TableDef implements Serializable {
 
-    private String schema;
+    private final String schema;
+
     private final String tableName;
 
+    private final String alias;
+
     public TableDef(String schema, String tableName) {
+        this(schema, tableName, null);
+    }
+
+    public TableDef(String schema, String tableName, String alias) {
         this.schema = schema;
         this.tableName = tableName;
+        this.alias = alias;
     }
 
     public TableDef(String tableName) {
-        this.tableName = tableName;
+        this(null,tableName, null);
     }
 
     public String getTableName() {
@@ -44,9 +52,15 @@ public class TableDef implements Serializable {
         return schema;
     }
 
+    public String getAlias() {
+        return alias;
+    }
+
+
     public QueryTable as(String alias) {
         return new QueryTable(schema, tableName, alias);
     }
 
 
+
 }
diff --git a/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/TableDefTest.java b/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/TableDefTest.java
new file mode 100644
index 00000000..94c4d100
--- /dev/null
+++ b/mybatis-flex-core/src/test/java/com/mybatisflex/coretest/TableDefTest.java
@@ -0,0 +1,23 @@
+package com.mybatisflex.coretest;
+
+import com.mybatisflex.core.query.QueryWrapper;
+import com.mybatisflex.coretest.table.AccountTableDef;
+import org.junit.Assert;
+import org.junit.Test;
+
+public class TableDefTest {
+
+    @Test
+    public void testTableDefAlias() {
+        AccountTableDef account1 = AccountTableDef.ACCOUNT;
+        AccountTableDef account2 = AccountTableDef.ACCOUNT.withAlias("a2");
+        String sql = new QueryWrapper().select(account1.AGE, account2.ID)
+            .from(account1)
+            .join(account2).on(account1.ID.eq(account2.ID))
+            .toSQL();
+        System.out.println(sql);
+        String expected = "SELECT `tb_account`.`age`, `a2`.`id` FROM `tb_account` " +
+            "JOIN `tb_account` AS `a2` ON `tb_account`.`id` = `a2`.`id`";
+        Assert.assertEquals(expected, sql);
+    }
+}
diff --git a/mybatis-flex-processor/src/main/java/com/mybatisflex/processor/builder/ContentBuilder.java b/mybatis-flex-processor/src/main/java/com/mybatisflex/processor/builder/ContentBuilder.java
index ee056724..3a19fcf4 100644
--- a/mybatis-flex-processor/src/main/java/com/mybatisflex/processor/builder/ContentBuilder.java
+++ b/mybatis-flex-processor/src/main/java/com/mybatisflex/processor/builder/ContentBuilder.java
@@ -136,6 +136,19 @@ public class ContentBuilder {
             : StrUtil.firstCharToLowerCase(tableInfo.getEntitySimpleName());
         content.append("    public ").append(tableDefClassName).append("() {\n")
             .append("        super").append("(\"").append(schema).append("\", \"").append(tableName).append("\");\n")
+            .append("    }\n\n");
+
+        content.append("    public ").append(tableDefClassName).append("(String alias) {\n")
+            .append("        super").append("(\"").append(schema).append("\", \"").append(tableName).append("\",alias);\n")
+            .append("    }\n");
+
+        //alias方法
+        content.append("\n    /**\n")
+            .append("     * 创建带别名的tableDef\n")
+            .append("     */\n");
+        content.append("    public ").append(tableDefClassName).append(" withAlias").append("(String alias) {\n")
+            .append("        ").append(tableDefClassName).append(" cloned = new ").append(tableDefClassName).append("(").append("alias").append(");\n")
+            .append("        return cloned;\n")
             .append("    }\n\n}\n");
         return content.toString();
     }