diff --git a/hutool-db/src/main/java/org/dromara/hutool/db/meta/Column.java b/hutool-db/src/main/java/org/dromara/hutool/db/meta/Column.java
index 57fed4a7f..7838aa992 100644
--- a/hutool-db/src/main/java/org/dromara/hutool/db/meta/Column.java
+++ b/hutool-db/src/main/java/org/dromara/hutool/db/meta/Column.java
@@ -50,6 +50,9 @@ public class Column implements Serializable, Cloneable {
 	 * 大小或数据长度
 	 */
 	private long size;
+	/**
+	 * 保留小数位数
+	 */
 	private Integer digit;
 	/**
 	 * 是否为可空