diff --git a/platform/backend/app/core/nvidia_client.py b/platform/backend/app/core/nvidia_client.py
index 5265b19..db90ca2 100644
--- a/platform/backend/app/core/nvidia_client.py
+++ b/platform/backend/app/core/nvidia_client.py
@@ -50,29 +50,31 @@ def _get_active_provider() -> str:
 
 def _get_provider_config(provider: Optional[str] = None) -> dict:
     p = provider or _get_active_provider()
-    # 优先从 DB 读取该供应商的配置
-    model = None
-    base_url = None
+    # 优先从 DB 读取该供应商的完整配置（包括 api_key）
+    db_model = None
+    db_base_url = None
+    db_api_key = None
     try:
         from ..database import SessionLocal
         from ..models import LLMConfig
         db = SessionLocal()
         cfg = db.query(LLMConfig).filter(LLMConfig.provider == p).order_by(LLMConfig.is_active.desc()).first()
         if cfg:
-            model = cfg.model
-            base_url = cfg.base_url
+            db_model = cfg.model
+            db_base_url = cfg.base_url
+            db_api_key = cfg.api_key
         db.close()
     except Exception:
         pass
     # 回退到代码默认值
     fb = _FALLBACK.get(p, {})
-    api_key = _API_KEYS.get(p, "")
+    api_key = db_api_key or _API_KEYS.get(p, "")
     if not api_key:
-        raise LLMError(f"{p} API_KEY 未配置，请在 .env 中设置")
+        raise LLMError(f"{p} API_KEY 未配置，请在管理后台 LLM 配置中设置 API Key")
     return {
         "api_key": api_key,
-        "model": model or fb.get("model", ""),
-        "base_url": base_url or fb.get("base_url", ""),
+        "model": db_model or fb.get("model", ""),
+        "base_url": db_base_url or fb.get("base_url", ""),
     }
 
 def _get_db_defaults(provider: Optional[str] = None) -> dict:
diff --git a/platform/frontend/admin.html b/platform/frontend/admin.html
index 1a13d16..c5ef28e 100644
--- a/platform/frontend/admin.html
+++ b/platform/frontend/admin.html
@@ -607,8 +607,9 @@
                     <el-col :span="12"><el-form-item label="名称"><el-input v-model="llmConfigForm.name" placeholder="如：default_expand"/></el-form-item></el-col>
                     <el-col :span="12"><el-form-item label="供应商">
                         <el-select v-model="llmConfigForm.provider" style="width:100%">
-                            <el-option label="opencode-go (deepseek-v4-pro)" value="opencode-go"></el-option>
-                            <el-option label="nvidia (gemma-3n)" value="nvidia"></el-option>
+                            <el-option label="opencode-go (deepseek-v4-flash)" value="opencode-go"></el-option>
+                            <el-option label="nvidia (step-3.5-flash)" value="nvidia"></el-option>
+                            <el-option label="sensenova (deepseek-v4-flash)" value="sensenova"></el-option>
                         </el-select>
                     </el-form-item></el-col>
                 </el-row>
@@ -718,9 +719,9 @@ const llmConfigs = ref([]);
                         Object.assign(llmConfigForm, row);
                     } else {
                         llmConfigDialogTitle.value = '新增配置'; editingLLMConfigId.value = null;
-                        llmConfigForm.id = null; llmConfigForm.name = ''; llmConfigForm.provider = 'opencode-go'; llmConfigForm.model = 'deepseek-v4-pro';
-                        llmConfigForm.base_url = 'https://opencode.ai/zen/go/v1'; llmConfigForm.api_key = ''; llmConfigForm.temperature = 0.7;
-                        llmConfigForm.max_tokens = 131072; llmConfigForm.system_prompt = ''; llmConfigForm.user_prompt_template = ''; llmConfigForm.is_active = true;
+                        llmConfigForm.id = null; llmConfigForm.name = ''; llmConfigForm.provider = 'sensenova'; llmConfigForm.model = 'deepseek-v4-flash';
+                        llmConfigForm.base_url = 'https://token.sensenova.cn/v1'; llmConfigForm.api_key = ''; llmConfigForm.temperature = 0.3;
+                        llmConfigForm.max_tokens = 4000; llmConfigForm.system_prompt = ''; llmConfigForm.user_prompt_template = ''; llmConfigForm.is_active = true;
                     }
                     llmConfigDialogVisible.value = true;
                 };