diff --git a/hutool-extra/src/main/java/cn/hutool/extra/spring/SpringCronUtil.java b/hutool-extra/src/main/java/cn/hutool/extra/spring/SpringCronUtil.java
index 0599a74fc..29287bdd8 100644
--- a/hutool-extra/src/main/java/cn/hutool/extra/spring/SpringCronUtil.java
+++ b/hutool-extra/src/main/java/cn/hutool/extra/spring/SpringCronUtil.java
@@ -22,6 +22,7 @@ import java.util.concurrent.ScheduledFuture;
*
取消定时任务
* 高级操作
*
+ * 参考:Spring doc
*
* @author JC
* @date 03/13
diff --git a/hutool-extra/src/test/java/cn/hutool/extra/spring/SpringCronUtilTest.java b/hutool-extra/src/test/java/cn/hutool/extra/spring/SpringCronUtilTest.java
index a3eb1e615..e4959da27 100644
--- a/hutool-extra/src/test/java/cn/hutool/extra/spring/SpringCronUtilTest.java
+++ b/hutool-extra/src/test/java/cn/hutool/extra/spring/SpringCronUtilTest.java
@@ -61,7 +61,7 @@ public class SpringCronUtilTest {
/**
* 高级用法
- * 参考:
+ * 参考:Spring doc
*/
@Test
public void senior() {