diff --git a/lib/local_storage/sqflite_localpodcast.dart b/lib/local_storage/sqflite_localpodcast.dart
index 7741340..937db2c 100644
--- a/lib/local_storage/sqflite_localpodcast.dart
+++ b/lib/local_storage/sqflite_localpodcast.dart
@@ -180,6 +180,15 @@ class DBHelper {
     return 0;
   }
 
+  Future<void> removePodcastNewMark(String id) async {
+    var dbClient = await database;
+    await dbClient.transaction((txn) async {
+      await txn.rawUpdate(
+          "UPDATE Episodes SET is_new = 0 WHERE feed_id = ? AND is_new = 1",
+          [id]);
+    });
+  }
+
   Future<bool> getNeverUpdate(String id) async {
     var dbClient = await database;
     List<Map> list = await dbClient
@@ -414,11 +423,12 @@ class DBHelper {
       ORDER BY add_date DESC""");
     return list
         .map((record) => SubHistory(
-            DateTime.fromMillisecondsSinceEpoch(record['remove_date']),
-            DateTime.fromMillisecondsSinceEpoch(record['add_date']),
-            record['rss_url'],
-            record['title'],
-            status: record['status'] == 0 ? true : false,))
+              DateTime.fromMillisecondsSinceEpoch(record['remove_date']),
+              DateTime.fromMillisecondsSinceEpoch(record['add_date']),
+              record['rss_url'],
+              record['title'],
+              status: record['status'] == 0 ? true : false,
+            ))
         .toList();
   }
 
@@ -1131,8 +1141,7 @@ class DBHelper {
         P.imagePath, P.primaryColor FROM Episodes E INNER JOIN PodcastLocal P ON E.feed_id = P.id 
         LEFT JOIN PlayHistory H ON E.enclosure_url = H.enclosure_url 
         GROUP BY E.enclosure_url HAVING SUM(H.listen_time) is null 
-        OR SUM(H.listen_time) = 0 ORDER BY RANDOM() LIMIT ? """,
-          [random]);
+        OR SUM(H.listen_time) = 0 ORDER BY RANDOM() LIMIT ? """, [random]);
     } else {
       list = await dbClient.rawQuery(
           """SELECT E.title, E.enclosure_url, E.enclosure_length, E.is_new,
diff --git a/lib/podcasts/podcast_detail.dart b/lib/podcasts/podcast_detail.dart
index 16dd5cc..fd5770d 100644
--- a/lib/podcasts/podcast_detail.dart
+++ b/lib/podcasts/podcast_detail.dart
@@ -113,7 +113,8 @@ class _PodcastDetailState extends State<PodcastDetail> {
     super.dispose();
   }
 
-  Future _updateRssItem(BuildContext context, PodcastLocal podcastLocal) async {
+  Future<void> _updateRssItem(
+      BuildContext context, PodcastLocal podcastLocal) async {
     final result = await _dbHelper.updatePodcastRss(podcastLocal);
     if (result >= 0) {
       Fluttertoast.showToast(
@@ -204,6 +205,14 @@ class _PodcastDetailState extends State<PodcastDetail> {
     }
   }
 
+  Future<int> _getNewCount() async {
+    return await _dbHelper.getPodcastUpdateCounts(widget.podcastLocal.id);
+  }
+
+  Future<void> _removePodcastNewMark() async {
+    await _dbHelper.removePodcastNewMark(widget.podcastLocal.id);
+  }
+
   Widget _podcastInfo(BuildContext context) {
     return Container(
       height: 170,
@@ -471,7 +480,7 @@ class _PodcastDetailState extends State<PodcastDetail> {
 
   Widget _actionBar(BuildContext context) {
     final s = context.s;
-    return Container(
+    return SizedBox(
         height: 30,
         child: Row(
           children: <Widget>[
@@ -612,6 +621,40 @@ class _PodcastDetailState extends State<PodcastDetail> {
                   }
                 }),
             Spacer(),
+            FutureBuilder<int>(
+                future: _getNewCount(),
+                initialData: 0,
+                builder: (context, snapshot) {
+                  return snapshot.data != 0
+                      ? Padding(
+                        padding: EdgeInsets.symmetric(horizontal: 4),
+                        child: Material(
+                            color: Colors.transparent,
+                            clipBehavior: Clip.hardEdge,
+                            borderRadius: BorderRadius.circular(100),
+                            child: SizedBox(
+                              width: 30,
+                              child: IconButton(
+                                  padding: EdgeInsets.only(bottom: 5),
+                                  tooltip: s.removeNewMark,
+                                  icon: Container(
+                                      height: 18,
+                                      width: 18,
+                                      child: CustomPaint(
+                                          painter: RemoveNewFlagPainter(
+                                              context.textTheme.bodyText1.color,
+                                              Colors.red))),
+                                  onPressed: () async {
+                                    await _removePodcastNewMark();
+                                    if (mounted) {
+                                      setState(() {});
+                                    }
+                                  }),
+                            ),
+                          ),
+                      )
+                      : Center();
+                }),
             if (!widget.hide)
               Material(
                   color: Colors.transparent,