diff --git a/app/api/endpoints/subscribe.py b/app/api/endpoints/subscribe.py
index 38bf4c0c..2e98d46e 100644
--- a/app/api/endpoints/subscribe.py
+++ b/app/api/endpoints/subscribe.py
@@ -99,7 +99,14 @@ def update_subscribe(
     # 避免更新缺失集数
     subscribe_dict = subscribe_in.dict()
     if not subscribe_in.lack_episode:
+        # 没有缺失集数时，缺失集数清空，避免更新为0
         subscribe_dict.pop("lack_episode")
+    elif subscribe_in.total_episode:
+        # 总集数增加时，缺失集数也要增加
+        if subscribe_in.total_episode > (subscribe.total_episode or 0):
+            subscribe_dict["lack_episode"] = (subscribe.lack_episode
+                                              + (subscribe_in.total_episode
+                                                 - (subscribe.total_episode or 0)))
     subscribe.update(db, subscribe_dict)
     return schemas.Response(success=True)
 
diff --git a/app/core/meta/metabase.py b/app/core/meta/metabase.py
index c5571fd9..a1a55224 100644
--- a/app/core/meta/metabase.py
+++ b/app/core/meta/metabase.py
@@ -459,28 +459,18 @@ class MetaBase(object):
         # 年份
         if not self.year:
             self.year = meta.year
-        # 开始季
-        if not self.begin_season:
+        # 季
+        if (self.type == MediaType.TV
+                and not self.season):
             self.begin_season = meta.begin_season
-        # 结束季
-        if not self.end_season:
             self.end_season = meta.end_season
-        # 总季数
-        if self.begin_season and self.end_season:
-            self.total_season = (self.end_season - self.begin_season) + 1
-        elif self.begin_season:
-            self.total_season = 1
+            self.total_season = meta.total_season
         # 开始集
-        if not self.begin_episode:
+        if (self.type == MediaType.TV
+                and not self.episode):
             self.begin_episode = meta.begin_episode
-        # 结束集
-        if not self.end_episode:
             self.end_episode = meta.end_episode
-        # 总集数
-        if self.begin_episode and self.end_episode:
-            self.total_episode = (self.end_episode - self.begin_episode) + 1
-        elif self.begin_episode:
-            self.total_episode = 1
+            self.total_episode = meta.total_episode
         # 版本
         if not self.resource_type:
             self.resource_type = meta.resource_type