diff --git a/backend/routes/config_routes.py b/backend/routes/config_routes.py
index 4f58eaf..b9762c6 100644
--- a/backend/routes/config_routes.py
+++ b/backend/routes/config_routes.py
@@ -364,7 +364,12 @@ def _test_openai_compatible(config: dict, test_prompt: str) -> dict:
     """测试 OpenAI 兼容接口"""
     import requests
 
-    base_url = config['base_url'].rstrip('/').rstrip('/v1') if config.get('base_url') else 'https://api.openai.com'
+    if config.get('base_url'):
+        base_url = config['base_url'].rstrip('/')
+        if base_url.endswith('/v1'):
+            base_url = base_url[:-3]
+    else:
+        base_url = 'https://api.openai.com'
     url = f"{base_url}/v1/chat/completions"
 
     payload = {
@@ -396,7 +401,12 @@ def _test_image_api(config: dict) -> dict:
     """测试图片 API 连接"""
     import requests
 
-    base_url = config['base_url'].rstrip('/').rstrip('/v1') if config.get('base_url') else 'https://api.openai.com'
+    if config.get('base_url'):
+        base_url = config['base_url'].rstrip('/')
+        if base_url.endswith('/v1'):
+            base_url = base_url[:-3]
+    else:
+        base_url = 'https://api.openai.com'
     url = f"{base_url}/v1/models"
 
     response = requests.get(
diff --git a/backend/utils/text_client.py b/backend/utils/text_client.py
index 2bd2be6..a3dc57f 100644
--- a/backend/utils/text_client.py
+++ b/backend/utils/text_client.py
@@ -48,7 +48,9 @@ def __init__(self, api_key: str = None, base_url: str = None, endpoint_type: str
                 "解决方案：在系统设置页面编辑文本生成服务商，填写 API Key"
             )
 
-        self.base_url = (base_url or "https://api.openai.com").rstrip('/').rstrip('/v1')
+        self.base_url = (base_url or "https://api.openai.com").rstrip('/')
+        if self.base_url.endswith('/v1'):
+            self.base_url = self.base_url[:-3]
 
         # 支持自定义端点路径
         endpoint = endpoint_type or '/v1/chat/completions'