diff --git a/packages/config/base.py b/packages/config/base.py
index 8b4d3ecc4..2bb8cd599 100755
--- a/packages/config/base.py
+++ b/packages/config/base.py
@@ -103,7 +103,7 @@ class SharedSettings(BaseSettings):
     doubao_vision_lite_model: str = (
         "doubao-seed-2-1-lite-260915"  # 快速视觉（Seed 2.1 Lite 原生多模态；原 vision-lite-250315 不可用）
     )
-    doubao_vision_use_lite: bool = True  # viral-video 图片分析默认用 lite 提速
+    doubao_vision_use_lite: bool = False  # #2181: lite视觉模型100%超时，默认关闭走pro（25-38s稳定返回）
     doubao_embedding_model: str = "doubao-embedding-vision-251215"  # 多模态向量化（原 large-text-240915 已 Retiring）
     doubao_video_model: str = "doubao-seedance-2-5-260628"
     doubao_video_timeout: int = 600  # 视频生成轮询总超时（秒）
diff --git a/tests/unit/test_ai_client.py b/tests/unit/test_ai_client.py
index 773d19dbf..91de86966 100755
--- a/tests/unit/test_ai_client.py
+++ b/tests/unit/test_ai_client.py
@@ -17,7 +17,7 @@ def mock_settings():
             doubao_api_key="test-api-key",
             doubao_model="doubao-pro-32k",
             doubao_base_url="https://ark.example.com/api/v3",
-            doubao_timeout=30,
+            doubao_timeout=45,
             doubao_max_retries=2,
         )
         yield mock
@@ -37,7 +37,7 @@ def client_without_key():
             doubao_api_key="",
             doubao_model="doubao-pro-32k",
             doubao_base_url="https://ark.example.com/api/v3",
-            doubao_timeout=30,
+            doubao_timeout=45,
             doubao_max_retries=2,
         )
         yield DoubaoClient()
diff --git a/tests/unit/test_api_settings.py b/tests/unit/test_api_settings.py
index 1b4c776f0..0075f52fc 100755
--- a/tests/unit/test_api_settings.py
+++ b/tests/unit/test_api_settings.py
@@ -80,7 +80,7 @@ class TestSharedSettingsDefaults:
     def test_default_doubao_settings(self):
         s = SharedSettings()
         assert "doubao" in s.doubao_model
-        assert s.doubao_timeout == 30
+        assert s.doubao_timeout == 45  # #2180 默认提到45s
         assert s.doubao_max_retries == 2
 
 
diff --git a/tests/unit/test_config_base.py b/tests/unit/test_config_base.py
index b53e23be9..d99252891 100755
--- a/tests/unit/test_config_base.py
+++ b/tests/unit/test_config_base.py
@@ -110,7 +110,7 @@ class TestSharedSettingsDefaults:
     def test_default_doubao_config(self):
         """豆包默认配置"""
         s = self._make_settings()
-        assert s.doubao_timeout == 30
+        assert s.doubao_timeout == 45  # #2180 默认提到45s
         assert s.doubao_max_retries == 2
         assert "volces.com" in s.doubao_base_url