diff --git a/apps/base/utils.py b/apps/base/utils.py
index 72155cb67..1c6d59fa8 100644
--- a/apps/base/utils.py
+++ b/apps/base/utils.py
@@ -5,12 +5,12 @@
 import datetime
 import uuid
 import os
-from fastapi import UploadFile
+from fastapi import UploadFile, HTTPException
 
 from apps.base.depends import IPRateLimit
 from apps.base.models import FileCodes
 from core.settings import settings
-from core.utils import get_random_num, get_random_string
+from core.utils import get_random_num, get_random_string, max_save_times_desc
 
 
 async def get_file_path_name(file: UploadFile):
@@ -43,11 +43,24 @@ async def get_expire_info(expire_value: int, expire_style: str):
     :return: expired_at 过期时间, expired_count 可用次数, used_count 已用次数, code 随机码
     """
     expired_count, used_count, now, code = -1, 0, datetime.datetime.now(), None
+    if settings.max_save_seconds > 0:
+        max_timedelta = datetime.timedelta(seconds=settings.max_save_seconds)
+        detail = await max_save_times_desc(settings.max_save_seconds)
+        detail = f'保存时间超过限制，{detail[0]}'
+    else:
+        max_timedelta = datetime.timedelta(days=7)
+        detail = '保存时间超过限制，最长保存时间：7天'
     if expire_style == 'day':
+        if datetime.timedelta(days=expire_value) > max_timedelta:
+            raise HTTPException(status_code=403, detail=detail)
         expired_at = now + datetime.timedelta(days=expire_value)
     elif expire_style == 'hour':
+        if datetime.timedelta(hours=expire_value) > max_timedelta:
+            raise HTTPException(status_code=403, detail=detail)
         expired_at = now + datetime.timedelta(hours=expire_value)
     elif expire_style == 'minute':
+        if datetime.timedelta(minutes=expire_value) > max_timedelta:
+            raise HTTPException(status_code=403, detail=detail)
         expired_at = now + datetime.timedelta(minutes=expire_value)
     elif expire_style == 'count':
         expired_at = now + datetime.timedelta(days=1)
diff --git a/core/settings.py b/core/settings.py
index 3b24f26b3..17937293c 100644
--- a/core/settings.py
+++ b/core/settings.py
@@ -13,6 +13,7 @@
     'name': '文件快递柜-FileCodeBox',
     'description': '开箱即用的文件快传系统',
     'keywords': 'FileCodeBox，文件快递柜，口令传送箱，匿名口令分享文本，文件',
+    'max_save_seconds': 0,
     's3_access_key_id': '',
     's3_secret_access_key': '',
     's3_bucket_name': '',
diff --git a/core/utils.py b/core/utils.py
index cfaeea25d..bbcbc3f21 100644
--- a/core/utils.py
+++ b/core/utils.py
@@ -57,3 +57,35 @@ async def get_file_url(code: str):
     :return:
     """
     return f'/share/download?key={await get_select_token(code)}&code={code}'
+
+async def max_save_times_desc(max_save_seconds: int):
+    """
+    获取最大保存时间的描述
+    :param max_save_seconds:
+    :return:
+    """
+    def gen_desc_zh(value: int, desc: str):
+        if value > 0:
+            return f'{value}{desc}'
+        else:
+            return ''
+    def gen_desc_en(value: int, desc: str):
+        if value > 0:
+            ret =  f'{value} {desc}'
+            if value > 1:
+                ret += 's'
+            ret += ' '
+            return ret
+        else:
+            return ''
+    max_timedelta = datetime.timedelta(seconds=max_save_seconds)
+    desc_zh, desc_en = '最长保存时间：', 'Max save time: '
+    desc_zh += gen_desc_zh(max_timedelta.days, '天')
+    desc_en += gen_desc_en(max_timedelta.days, 'day')
+    desc_zh += gen_desc_zh(max_timedelta.seconds // 3600, '小时')
+    desc_en += gen_desc_en(max_timedelta.seconds // 3600, 'hour')
+    desc_zh += gen_desc_zh(max_timedelta.seconds % 3600 // 60, '分钟')
+    desc_en += gen_desc_en(max_timedelta.seconds % 3600 // 60, 'minute')
+    desc_zh += gen_desc_zh(max_timedelta.seconds % 60, '秒')
+    desc_en += gen_desc_en(max_timedelta.seconds % 60, 'second')
+    return desc_zh, desc_en
diff --git a/main.py b/main.py
index 4a2f1527c..6ab00845e 100644
--- a/main.py
+++ b/main.py
@@ -4,10 +4,11 @@
 # @Software: PyCharm
 import asyncio
 import os
+import re
 
 from fastapi import FastAPI
 from starlette.middleware.cors import CORSMiddleware
-from starlette.responses import HTMLResponse
+from starlette.responses import HTMLResponse, FileResponse
 from starlette.staticfiles import StaticFiles
 from tortoise.contrib.fastapi import register_tortoise
 
@@ -15,6 +16,7 @@
 from apps.admin.views import admin_api
 from core.settings import data_root, settings
 from core.tasks import delete_expire_files
+from core.utils import max_save_times_desc
 
 app = FastAPI()
 
@@ -26,7 +28,24 @@
     allow_headers=["*"],
 )
 
-app.mount('/assets', StaticFiles(directory='./fcb-fronted/dist/assets'), name="assets")
+@app.get('/assets/{file_path:path}')
+async def assets(file_path: str):
+    if settings.max_save_seconds > 0:
+        if re.match(r'SendView-[\d|a-f|A-F]+\.js', file_path):
+            with open(f'./fcb-fronted/dist/assets/{file_path}', 'r', encoding='utf-8') as f:
+                # 删除永久保存选项
+                content = f.read()
+                content = content.replace('_(c,{label:e(r)("send.expireData.forever"),value:"forever"},null,8,["label"]),', '')
+                return HTMLResponse(content=content, media_type='text/javascript')
+        if re.match(r'index-[\d|a-f|A-F]+\.js', file_path):
+            with open(f'./fcb-fronted/dist/assets/{file_path}', 'r', encoding='utf-8') as f:
+                # 更改本文描述
+                desc_zh, desc_en = await max_save_times_desc(settings.max_save_seconds)
+                content = f.read()
+                content = content.replace('天数<7', desc_zh)
+                content = content.replace('Days <7', desc_en)
+                return HTMLResponse(content=content, media_type='text/javascript')
+    return FileResponse(f'./fcb-fronted/dist/assets/{file_path}')
 
 register_tortoise(
     app,