diff --git a/app/api/endpoints/system.py b/app/api/endpoints/system.py
index 429fad8f..376089b8 100644
--- a/app/api/endpoints/system.py
+++ b/app/api/endpoints/system.py
@@ -8,6 +8,7 @@ from pathlib import Path
 from typing import Optional, Union
 
 import aiofiles
+import pillow_avif  # noqa 用于自动注册AVIF支持
 from PIL import Image
 from fastapi import APIRouter, Depends, HTTPException, Header, Request, Response
 from fastapi.responses import StreamingResponse
@@ -50,7 +51,6 @@ def fetch_image(
     """
     处理图片缓存逻辑，支持HTTP缓存和磁盘缓存
     """
-
     if not url:
         raise HTTPException(status_code=404, detail="URL not provided")
 
@@ -68,6 +68,10 @@ def fetch_image(
         sanitized_path = SecurityUtils.sanitize_url_path(url)
         cache_path = settings.CACHE_PATH / "images" / sanitized_path
 
+        # 没有文件类型，则添加后缀，在恶意文件类型和实际需求下的折衷选择
+        if not cache_path.suffix:
+            cache_path = cache_path.with_suffix(".jpg")
+
         # 确保缓存路径和文件类型合法
         if not SecurityUtils.is_safe_path(settings.CACHE_PATH, cache_path, settings.SECURITY_IMAGE_SUFFIXES):
             raise HTTPException(status_code=400, detail="Invalid cache path or file type")
@@ -88,7 +92,8 @@ def fetch_image(
     # 请求远程图片
     referer = "https://movie.douban.com/" if "doubanio.com" in url else None
     proxies = settings.PROXY if proxy else None
-    response = RequestUtils(ua=settings.USER_AGENT, proxies=proxies, referer=referer).get_res(url=url)
+    response = RequestUtils(ua=settings.USER_AGENT, proxies=proxies, referer=referer,
+                            accept_type="image/avif,image/webp,image/apng,*/*").get_res(url=url)
     if not response:
         raise HTTPException(status_code=502, detail="Failed to fetch the image from the remote server")
 
diff --git a/app/chain/recommend.py b/app/chain/recommend.py
index 321d77a6..d461045c 100644
--- a/app/chain/recommend.py
+++ b/app/chain/recommend.py
@@ -3,6 +3,7 @@ import tempfile
 from pathlib import Path
 from typing import List
 
+import pillow_avif  # noqa 用于自动注册AVIF支持
 from PIL import Image
 
 from app.chain import ChainBase
@@ -116,6 +117,10 @@ class RecommendChain(ChainBase, metaclass=Singleton):
         sanitized_path = SecurityUtils.sanitize_url_path(url)
         cache_path = settings.CACHE_PATH / "images" / sanitized_path
 
+        # 没有文件类型，则添加后缀，在恶意文件类型和实际需求下的折衷选择
+        if not cache_path.suffix:
+            cache_path = cache_path.with_suffix(".jpg")
+
         # 确保缓存路径和文件类型合法
         if not SecurityUtils.is_safe_path(settings.CACHE_PATH, cache_path, settings.SECURITY_IMAGE_SUFFIXES):
             logger.debug(f"Invalid cache path or file type for URL: {url}, sanitized path: {sanitized_path}")
diff --git a/app/core/config.py b/app/core/config.py
index a4acf5c1..41ba137d 100644
--- a/app/core/config.py
+++ b/app/core/config.py
@@ -247,7 +247,7 @@ class ConfigModel(BaseModel):
     )
     # 允许的图片文件后缀格式
     SECURITY_IMAGE_SUFFIXES: List[str] = Field(
-        default_factory=lambda: [".jpg", ".jpeg", ".png", ".webp", ".gif", ".svg"]
+        default_factory=lambda: [".jpg", ".jpeg", ".png", ".webp", ".gif", ".svg", ".avif"]
     )
     # 重命名时支持的S0别名
     RENAME_FORMAT_S0_NAMES: List[str] = Field(
diff --git a/app/utils/security.py b/app/utils/security.py
index f7367915..8190d928 100644
--- a/app/utils/security.py
+++ b/app/utils/security.py
@@ -42,7 +42,7 @@ class SecurityUtils:
     @staticmethod
     def is_safe_url(url: str, allowed_domains: Union[Set[str], List[str]], strict: bool = False) -> bool:
         """
-        验证URL是否在允许的域名列表中，包括带有端口的域名。
+        验证URL是否在允许的域名列表中，包括带有端口的域名
 
         :param url: 需要验证的 URL
         :param allowed_domains: 允许的域名集合，域名可以包含端口
diff --git a/requirements.in b/requirements.in
index 85aaa5bd..0a0a5ef6 100644
--- a/requirements.in
+++ b/requirements.in
@@ -32,6 +32,7 @@ func_timeout==4.3.5
 bs4~=0.0.1
 beautifulsoup4~=4.12.2
 pillow~=10.4.0
+pillow-avif-plugin~=1.4.6
 pyTelegramBotAPI~=4.12.0
 playwright~=1.37.0
 cf-clearance~=0.31.0