diff --git a/api/@ohos.reminderAgent.d.ts b/api/@ohos.reminderAgent.d.ts
index 4fb85da2d034e6d8c7eac1bc592d663d3653b17b..421e01caaed865d69c7e8e57963a19d0ad407887 100644
--- a/api/@ohos.reminderAgent.d.ts
+++ b/api/@ohos.reminderAgent.d.ts
@@ -408,6 +408,13 @@ declare namespace reminderAgent {
      * @syscap SystemCapability.Notification.ReminderAgent.
      */
     minute: number;
+
+    /**
+     * value of second.
+     * @since 7
+     * @syscap SystemCapability.Notification.ReminderAgent.
+     */
+    second?: number;
   }
 }
 export default reminderAgent;
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