diff --git a/easy-es-springboot-sample/src/main/java/org/dromara/easyes/sample/entity/Document.java b/easy-es-springboot-sample/src/main/java/org/dromara/easyes/sample/entity/Document.java
index 0ecf6639..2c404f09 100644
--- a/easy-es-springboot-sample/src/main/java/org/dromara/easyes/sample/entity/Document.java
+++ b/easy-es-springboot-sample/src/main/java/org/dromara/easyes/sample/entity/Document.java
@@ -38,7 +38,7 @@ public class Document {
     /**
      * 作者 加@TableField注解,并指明strategy = FieldStrategy.NOT_EMPTY 表示更新的时候的策略为 创建者不为空字符串时才更新
      */
-    @IndexField(strategy = FieldStrategy.NOT_EMPTY)
+    @IndexField(strategy = FieldStrategy.NOT_EMPTY, copyTo = "copyToField")
     private String creator;
     /**
      * 创建时间
@@ -66,6 +66,11 @@ public class Document {
     @IndexField(value = "wu-la", fieldType = FieldType.TEXT, analyzer = Analyzer.IK_SMART, searchAnalyzer = Analyzer.IK_SMART, fieldData = true)
     private String customField;
 
+    /**
+     * 演示copy_to复制字段
+     */
+    private String copyToField;
+
     /**
      * 高亮返回值被映射的字段
      */