diff --git a/docs/usage/README.md b/docs/usage/README.md
index 647da48..cb34657 100644
--- a/docs/usage/README.md
+++ b/docs/usage/README.md
@@ -137,6 +137,7 @@ sidebar: auto
   :::
 
 - `BISON_PROXY`: 使用的代理连接，形如`http://<ip>:<port>`（可选）
+- `BISON_UA`: 使用的 User-Agent，默认为 Chrome
 
 ## 使用
 
diff --git a/src/plugins/nonebot_bison/plugin_config.py b/src/plugins/nonebot_bison/plugin_config.py
index dfd43f3..0a539f5 100644
--- a/src/plugins/nonebot_bison/plugin_config.py
+++ b/src/plugins/nonebot_bison/plugin_config.py
@@ -18,6 +18,7 @@ class PlugConfig(BaseSettings):
     # 0：不启用；1：首条消息单独发送，剩余照片合并转发；2以及以上：所有消息全部合并转发
     bison_resend_times: int = 0
     bison_proxy: Optional[str]
+    bison_ua: str = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/51.0.2704.103 Safari/537.36"
 
     class Config:
         extra = "ignore"
diff --git a/src/plugins/nonebot_bison/utils/http.py b/src/plugins/nonebot_bison/utils/http.py
index f46af30..082aa55 100644
--- a/src/plugins/nonebot_bison/utils/http.py
+++ b/src/plugins/nonebot_bison/utils/http.py
@@ -4,9 +4,8 @@ import httpx
 
 from ..plugin_config import plugin_config
 
-if plugin_config.bison_proxy:
-    http_client = functools.partial(
-        httpx.AsyncClient, proxies=plugin_config.bison_proxy
-    )
-else:
-    http_client = httpx.AsyncClient
+http_client = functools.partial(
+    httpx.AsyncClient,
+    proxies=plugin_config.bison_proxy or None,
+    headers={"user-agent": plugin_config.bison_ua},
+)
diff --git a/tests/test_proxy.py b/tests/test_proxy.py
index ec4a22e..44a9124 100644
--- a/tests/test_proxy.py
+++ b/tests/test_proxy.py
@@ -1,6 +1,5 @@
 import pytest
 from nonebug import App
-from nonebug.fixture import nonebug_init
 
 
 async def test_without_proxy(app: App):
@@ -8,6 +7,8 @@ async def test_without_proxy(app: App):
 
     c = http_client()
     assert not c._mounts
+    req = c.build_request("GET", "http://example.com")
+    assert "Chrome" in req.headers["User-Agent"]
 
 
 @pytest.mark.parametrize(