diff --git a/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java b/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java
index 356b2ee15c..48ea9f148a 100644
--- a/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java
+++ b/src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java
@@ -15,9 +15,6 @@
  */
 package com.alibaba.druid.sql.dialect.mysql.visitor;
 
-import java.util.List;
-import java.util.Map;
-
 import com.alibaba.druid.sql.ast.SQLCommentHint;
 import com.alibaba.druid.sql.ast.SQLDataType;
 import com.alibaba.druid.sql.ast.SQLExpr;
@@ -152,6 +149,9 @@ import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlUnlockTablesStatem
 import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlUpdateStatement;
 import com.alibaba.druid.sql.visitor.SQLASTOutputVisitor;
 
+import java.util.List;
+import java.util.Map;
+
 public class MySqlOutputVisitor extends SQLASTOutputVisitor implements MySqlASTVisitor {
 
     public MySqlOutputVisitor(Appendable appender){
@@ -290,6 +290,11 @@ public class MySqlOutputVisitor extends SQLASTOutputVisitor implements MySqlASTV
         print(' ');
         x.getDataType().accept(this);
 
+        for (SQLColumnConstraint item : x.getConstraints()) {
+            print(' ');
+            item.accept(this);
+        }
+
         if (x.getDefaultExpr() != null) {
             if (x.getDefaultExpr() instanceof SQLNullExpr) {
                 print(" NULL");
@@ -314,11 +319,6 @@ public class MySqlOutputVisitor extends SQLASTOutputVisitor implements MySqlASTV
             print(" AUTO_INCREMENT");
         }
 
-        for (SQLColumnConstraint item : x.getConstraints()) {
-            print(' ');
-            item.accept(this);
-        }
-
         if (x.getComment() != null) {
             print(" COMMENT ");
             x.getComment().accept(this);