diff --git a/RSSEntry.py b/RSSEntry.py
index 426f584..f63b389 100644
--- a/RSSEntry.py
+++ b/RSSEntry.py
@@ -49,7 +49,17 @@ def calHash(url: dict, item: dict) -> HashEntry:
         hasht = hasht + item['title']
     if 'link' in item and item['link'] is not None:
         hasht = hasht + item['link']
-    if 'description' in item and item['description'] is not None:
+    matched = False
+    if 'published' in item and item['published'] is not None:
+        hasht = hasht + item['published']
+        matched = True
+    if 'updated' in item and item['updated'] is not None:
+        hasht = hasht + item['updated']
+        matched = True
+    if 'pubDate' in item and item['pubDate'] is not None:
+        hasht = hasht + item['pubDate']
+        matched = True
+    if not matched and 'description' in item and item['description'] is not None:
         hasht = hasht + item['description']
     hashed = sha256WithBase64(hasht)
     return HashEntry(id=hashd, hash=hashed)
diff --git a/readset.py b/readset.py
index 1c4e876..e841f1a 100644
--- a/readset.py
+++ b/readset.py
@@ -13,6 +13,10 @@
 #
 # You should have received a copy of the GNU Affero General Public License
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
+from typing import List
+from getopt import getopt
+
+
 class settings:
     def __init__(self, fn: str = None):
         if fn is not None:
@@ -33,5 +37,19 @@ class settings:
         ) and int(d['minTTL']) >= 1 else 5
         self._maxTTL = int(d['maxTTL']) if 'maxTTL' in d and d['maxTTL'].isnumeric(
         ) and int(d['maxTTL']) >= self._minTTL else max(1440, self._minTTL)
-        self._maxRetryCount = int(d['maxRetryCount']) if 'maxRetryCount' in d and d['maxRetryCount'].isnumeric() and int(d['maxRetryCount']) >= 0 else 3
+        self._maxRetryCount = int(d['maxRetryCount']) if 'maxRetryCount' in d and d['maxRetryCount'].isnumeric(
+        ) and int(d['maxRetryCount']) >= 0 else 3
         self._telegramBotApiServer = d['telegramBotApiServer'] if 'telegramBotApiServer' in d else 'https://api.telegram.org'
+
+
+class commandline:
+    def __init__(self, commandline: List[str] = None):
+        self._rebuildHashlist = False
+        if commandline is not None:
+            self.parse(commandline)
+
+    def parse(self, commandline: List[str]):
+        cml = getopt(commandline, '', ['rebuild-hashlist'])
+        for i in cml[0]:
+            if i[0] == '--rebuild-hashlist':
+                self._rebuildHashlist = True
diff --git a/rssbot.py b/rssbot.py
index d5f7cb4..930a31b 100644
--- a/rssbot.py
+++ b/rssbot.py
@@ -16,7 +16,7 @@
 from database import database, userStatus, RSSConfig
 from RSSEntry import HashEntry, HashEntries, calHash
 from os.path import exists
-from readset import settings
+from readset import settings, commandline
 from requests import Session
 from traceback import format_exc
 from threading import Thread
@@ -32,6 +32,7 @@ from re import search, I
 from rsschecker import RSSCheckerThread
 from rsslist import getInlineKeyBoardForRSSList, InlineKeyBoardForRSSList, getInlineKeyBoardForRSSInList, getTextContentForRSSInList
 from usercheck import checkUserPermissionsInChat, UserPermissionsInChatCheckResult
+import sys
 
 
 def getMediaInfo(m: dict, config: RSSConfig = RSSConfig()) -> str:
@@ -246,6 +247,9 @@ class main:
         if self._setting._token is None:
             print('没有机器人token')
             return -1
+        self._commandLine = commandline()
+        if len(sys.argv) > 1:
+            self._commandLine.parse(sys.argv[1:])
         self._telegramBotApiServer = self._setting._telegramBotApiServer
         self._db = database(self)
         if not exists('settings.txt'):
diff --git a/rsschecker.py b/rsschecker.py
index 1b02427..7f78f63 100644
--- a/rsschecker.py
+++ b/rsschecker.py
@@ -15,7 +15,7 @@
 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
 from threading import Thread
 from time import sleep, time
-from RSSEntry import RSSEntry, calHash, ChatEntry
+from RSSEntry import RSSEntry, calHash, ChatEntry, HashEntries
 from traceback import format_exc
 from rssparser import RSSParser
 
@@ -23,7 +23,7 @@ from rssparser import RSSParser
 class RSSCheckerThread(Thread):
     def __loop(self):
         for rss in self._main._db.getAllRSSList():
-            if self.__needUpdate(rss):
+            if self.__needUpdate(rss) or self._main._commandLine._rebuildHashlist:
                 try:
                     p = RSSParser()
                     p.parse(rss.url)
@@ -32,8 +32,14 @@ class RSSCheckerThread(Thread):
                         meta = p.m
                         itemList = p.itemList[:self._main._setting._maxCount]
                         itemList.reverse()
+                        if self._main._commandLine._rebuildHashlist:
+                            rss.hashList = HashEntries(
+                                self._main._setting._maxCount)
                         for item in itemList:
                             hashEntry = calHash(rss.url, item)
+                            if self._main._commandLine._rebuildHashlist:
+                                rss.hashList.add(hashEntry)
+                                continue
                             if not rss.hashList.has(hashEntry):
                                 rss.hashList.add(hashEntry)
                                 for info in rss.chatList:
@@ -54,6 +60,7 @@ class RSSCheckerThread(Thread):
                         rss.title, rss.url, updateTime, rss.hashList, p.ttl)
                 except:
                     print(format_exc())
+        self._main._commandLine._rebuildHashlist = False
 
     def __init__(self, m):
         Thread.__init__(self)