diff --git a/app/chain/download.py b/app/chain/download.py
index 7066d5ad..9bb01b1f 100644
--- a/app/chain/download.py
+++ b/app/chain/download.py
@@ -345,7 +345,8 @@ class DownloadChain(ChainBase):
                 username=username,
                 channel=channel.value if channel else None,
                 date=time.strftime("%Y-%m-%d %H:%M:%S", time.localtime()),
-                media_category=media_category
+                media_category=media_category,
+                note={"source": source}
             )
 
             # 登记下载文件
@@ -383,7 +384,8 @@ class DownloadChain(ChainBase):
                 "context": context,
                 "username": username,
                 "downloader": _downloader,
-                "episodes": episodes
+                "episodes": episodes,
+                "source": source
             })
         else:
             # 下载失败
@@ -489,7 +491,8 @@ class DownloadChain(ChainBase):
         logger.debug(f"Initial contexts: {len(contexts)} items, Downloader: {downloader}")
         event_data = ResourceSelectionEventData(
             contexts=contexts,
-            downloader=downloader
+            downloader=downloader,
+            origin=source
         )
         event = eventmanager.send_event(ChainEventType.ResourceSelection, event_data)
         # 如果事件修改了上下文数据，使用更新后的数据
diff --git a/app/chain/subscribe.py b/app/chain/subscribe.py
index 6067ebb8..838a0f70 100644
--- a/app/chain/subscribe.py
+++ b/app/chain/subscribe.py
@@ -1,7 +1,8 @@
 import copy
+import json
 import random
-import time
 import threading
+import time
 from datetime import datetime
 from typing import Dict, List, Optional, Union, Tuple
 
@@ -399,7 +400,7 @@ class SubscribeChain(ChainBase, metaclass=Singleton):
                         save_path=subscribe.save_path,
                         media_category=subscribe.media_category,
                         downloader=subscribe.downloader,
-                        source="Subscribe"
+                        source=self.get_subscribe_source_keyword(subscribe)
                     )
 
                     # 判断是否应完成订阅
@@ -791,7 +792,8 @@ class SubscribeChain(ChainBase, metaclass=Singleton):
                                                                      save_path=subscribe.save_path,
                                                                      media_category=subscribe.media_category,
                                                                      downloader=subscribe.downloader,
-                                                                     source="Subscribe")
+                                                                     source=self.get_subscribe_source_keyword(subscribe)
+                                                                     )
                 # 判断是否要完成订阅
                 self.finish_subscribe_or_not(subscribe=subscribe, meta=meta, mediainfo=mediainfo,
                                              downloads=downloads, lefts=lefts)
@@ -1332,3 +1334,24 @@ class SubscribeChain(ChainBase, metaclass=Singleton):
         if state in ["R", "P"]:
             return "R,P"
         return state
+
+    @staticmethod
+    def get_subscribe_source_keyword(subscribe: Subscribe) -> str:
+        """
+        构造用于订阅来源的关键字字符串
+        :param subscribe: Subscribe 对象
+        :return: 格式化的订阅来源关键字字符串，格式为 "Subscribe|{...}"
+        """
+        source_keyword = {
+            'id': subscribe.id,
+            'name': subscribe.name,
+            'year': subscribe.year,
+            'type': subscribe.type,
+            'season': subscribe.season,
+            'tmdbid': subscribe.tmdbid,
+            'imdbid': subscribe.imdbid,
+            'tvdbid': subscribe.tvdbid,
+            'doubanid': subscribe.doubanid,
+            'bangumiid': subscribe.bangumiid
+        }
+        return f"Subscribe|{json.dumps(source_keyword, ensure_ascii=False)}"
diff --git a/app/schemas/event.py b/app/schemas/event.py
index 08e78420..b36e9025 100644
--- a/app/schemas/event.py
+++ b/app/schemas/event.py
@@ -165,6 +165,7 @@ class ResourceSelectionEventData(BaseModel):
     # 输入参数
     contexts: Any = Field(None, description="待选择的资源上下文列表")
     downloader: Optional[str] = Field(None, description="下载器")
+    origin: Optional[str] = Field(None, description="来源")
 
     # 输出参数
     updated: bool = Field(False, description="是否已更新")