diff --git a/api/app/controllers/model_controller.py b/api/app/controllers/model_controller.py
index 83753744..bb1ba526 100644
--- a/api/app/controllers/model_controller.py
+++ b/api/app/controllers/model_controller.py
@@ -328,7 +328,7 @@ async def update_composite_model(
     
     try:
         if model_data.type is not None:
-            raise BusinessException("不允许更改模型类型和供应商", BizCode.INVALID_PARAMETER)
+            raise BusinessException("不允许更改模型类型", BizCode.INVALID_PARAMETER)
         result_orm = await ModelConfigService.update_composite_model(db=db, model_id=model_id, model_data=model_data, tenant_id=current_user.tenant_id)
         api_logger.info(f"组合模型更新成功: {result_orm.name} (ID: {model_id})")
         
@@ -368,6 +368,9 @@ def update_model(
     更新模型配置
     """
     api_logger.info(f"更新模型配置请求: model_id={model_id}, 用户: {current_user.username}, tenant_id={current_user.tenant_id}")
+
+    if model_data.type is not None or model_data.provider is not None:
+        raise BusinessException("不允许更改模型类型和供应商", BizCode.INVALID_PARAMETER)
     
     try:
         api_logger.debug(f"开始更新模型配置: model_id={model_id}")
diff --git a/api/app/repositories/model_repository.py b/api/app/repositories/model_repository.py
index f323b30c..2c513e82 100644
--- a/api/app/repositories/model_repository.py
+++ b/api/app/repositories/model_repository.py
@@ -48,13 +48,17 @@ class ModelConfigRepository:
             raise
 
     @staticmethod
-    def get_by_name(db: Session, name: str, tenant_id: uuid.UUID | None = None) -> Optional[ModelConfig]:
-        """根据名称获取模型配置"""
-        db_logger.debug(f"根据名称查询模型配置: name={name}, tenant_id={tenant_id}")
+    def get_by_name(db: Session, name: str, provider: str | None = None, tenant_id: uuid.UUID | None = None) -> Optional[ModelConfig]:
+        """根据名称和供应商获取模型配置"""
+        db_logger.debug(f"根据名称查询模型配置: name={name}, provider={provider}, tenant_id={tenant_id}")
         
         try:
             query = db.query(ModelConfig).filter(ModelConfig.name == name)
             
+            # 添加供应商过滤
+            if provider:
+                query = query.filter(ModelConfig.provider == provider)
+            
             # 添加租户过滤
             if tenant_id:
                 query = query.filter(
@@ -69,7 +73,7 @@ class ModelConfigRepository:
                 db_logger.debug(f"模型配置查询成功: {model.name}")
             return model
         except Exception as e:
-            db_logger.error(f"根据名称查询模型配置失败: name={name} - {str(e)}")
+            db_logger.error(f"根据名称查询模型配置失败: name={name}, provider={provider} - {str(e)}")
             raise
 
     @staticmethod
diff --git a/api/app/schemas/model_schema.py b/api/app/schemas/model_schema.py
index a2d3650a..0c0bbeed 100644
--- a/api/app/schemas/model_schema.py
+++ b/api/app/schemas/model_schema.py
@@ -25,9 +25,9 @@ class ModelConfigBase(BaseModel):
 
 class ApiKeyCreateNested(BaseModel):
     """用于在创建模型时内嵌创建API Key的Schema"""
-    model_name: str = Field(..., description="模型实际名称", max_length=255)
+    model_name: Optional[str] = Field(None, description="模型实际名称", max_length=255)
     description: Optional[str] = Field(None, description="备注")
-    provider: ModelProvider = Field(..., description="API Key提供商")
+    provider: Optional[str] = Field(None, description="API Key提供商")
     api_key: str = Field(..., description="API密钥", max_length=500)
     api_base: Optional[str] = Field(None, description="API基础URL", max_length=500)
     config: Optional[Dict[str, Any]] = Field({}, description="API Key特定配置")
@@ -57,6 +57,8 @@ class ModelConfigUpdate(BaseModel):
     """更新模型配置Schema"""
     name: Optional[str] = Field(None, description="模型显示名称", max_length=255)
     type: Optional[ModelType] = Field(None, description="模型类型")
+    provider: Optional[str] = Field(None, description="供应商")
+    logo: Optional[str] = Field(None, description="模型logo图片URL", max_length=255)
     description: Optional[str] = Field(None, description="模型描述")
     config: Optional[Dict[str, Any]] = Field(None, description="模型配置参数")
     is_active: Optional[bool] = Field(None, description="是否激活")
diff --git a/api/app/services/model_service.py b/api/app/services/model_service.py
index d382b1b1..aa8cfbac 100644
--- a/api/app/services/model_service.py
+++ b/api/app/services/model_service.py
@@ -6,7 +6,7 @@ import math
 import time
 import asyncio
 
-from app.models.models_model import ModelConfig, ModelApiKey, ModelType, LoadBalanceStrategy
+from app.models.models_model import ModelConfig, ModelApiKey, ModelType, LoadBalanceStrategy, ModelProvider
 from app.repositories.model_repository import ModelConfigRepository, ModelApiKeyRepository, ModelBaseRepository
 from app.schemas import model_schema
 from app.schemas.model_schema import (
@@ -69,9 +69,9 @@ class ModelConfigService:
         return items
 
     @staticmethod
-    def get_model_by_name(db: Session, name: str, tenant_id: uuid.UUID | None = None) -> ModelConfig:
+    def get_model_by_name(db: Session, name: str, provider: str | None = None, tenant_id: uuid.UUID | None = None) -> ModelConfig:
         """根据名称获取模型配置"""
-        model = ModelConfigRepository.get_by_name(db, name, tenant_id=tenant_id)
+        model = ModelConfigRepository.get_by_name(db, name, provider=provider, tenant_id=tenant_id)
         if not model:
             raise BusinessException("模型配置不存在", BizCode.MODEL_NOT_FOUND)
         return model
@@ -244,7 +244,7 @@ class ModelConfigService:
     async def create_model(db: Session, model_data: ModelConfigCreate, tenant_id: uuid.UUID) -> ModelConfig:
         """创建模型配置"""
         # 检查名称是否已存在（同租户内）
-        if ModelConfigRepository.get_by_name(db, model_data.name, tenant_id=tenant_id):
+        if ModelConfigRepository.get_by_name(db, model_data.name, provider=model_data.provider, tenant_id=tenant_id):
             raise BusinessException("模型名称已存在", BizCode.DUPLICATE_NAME)
 
         # 验证配置
@@ -253,8 +253,8 @@ class ModelConfigService:
             for api_key_data in api_key_data_list:
                 validation_result = await ModelConfigService.validate_model_config(
                     db=db,
-                    model_name=api_key_data.model_name,
-                    provider=api_key_data.provider,
+                    model_name=model_data.name,
+                    provider=model_data.provider,
                     api_key=api_key_data.api_key,
                     api_base=api_key_data.api_base,
                     model_type=model_data.type,  # 传递模型类型
@@ -277,6 +277,8 @@ class ModelConfigService:
 
         if api_key_datas:
             for api_key_data in api_key_datas:
+                api_key_data.model_name = model_data.name
+                api_key_data.provider = model_data.provider
                 api_key_create_schema = ModelApiKeyCreate(
                     model_config_ids=[model.id],
                     **api_key_data.model_dump()
@@ -295,7 +297,7 @@ class ModelConfigService:
             raise BusinessException("模型配置不存在", BizCode.MODEL_NOT_FOUND)
 
         if model_data.name and model_data.name != existing_model.name:
-            if ModelConfigRepository.get_by_name(db, model_data.name, tenant_id=tenant_id):
+            if ModelConfigRepository.get_by_name(db, model_data.name, provider=existing_model.provider, tenant_id=tenant_id):
                 raise BusinessException("模型名称已存在", BizCode.DUPLICATE_NAME)
 
         model = ModelConfigRepository.update(db, model_id, model_data, tenant_id=tenant_id)
@@ -306,7 +308,7 @@ class ModelConfigService:
     @staticmethod
     async def create_composite_model(db: Session, model_data: model_schema.CompositeModelCreate, tenant_id: uuid.UUID) -> ModelConfig:
         """创建组合模型"""
-        if ModelConfigRepository.get_by_name(db, model_data.name, tenant_id=tenant_id):
+        if ModelConfigRepository.get_by_name(db, model_data.name, provider=ModelProvider.COMPOSITE, tenant_id=tenant_id):
             raise BusinessException("模型名称已存在", BizCode.DUPLICATE_NAME)
         
         # 验证所有 API Key 存在且类型匹配
@@ -341,7 +343,7 @@ class ModelConfigService:
             "type": model_data.type,
             "logo": model_data.logo,
             "description": model_data.description,
-            "provider": "composite",
+            "provider": ModelProvider.COMPOSITE,
             "config": model_data.config,
             "is_active": model_data.is_active,
             "is_public": model_data.is_public,
@@ -369,6 +371,10 @@ class ModelConfigService:
         existing_model = ModelConfigRepository.get_by_id(db, model_id, tenant_id=tenant_id)
         if not existing_model:
             raise BusinessException("模型配置不存在", BizCode.MODEL_NOT_FOUND)
+
+        if model_data.name and model_data.name != existing_model.name:
+            if ModelConfigRepository.get_by_name(db, model_data.name, provider=existing_model.provider, tenant_id=tenant_id):
+                raise BusinessException("模型名称已存在", BizCode.DUPLICATE_NAME)
         
         if not existing_model.is_composite:
             raise BusinessException("该模型不是组合模型", BizCode.INVALID_PARAMETER)
@@ -471,11 +477,14 @@ class ModelApiKeyService:
             # 从ModelBase获取model_name
             model_name = model_config.model_base.name if model_config.model_base else model_config.name
             
-            # 检查是否存在API Key（包括软删除）
-            existing_key = db.query(ModelApiKey).filter(
+            # 检查是否存在API Key（包括软删除），需要考虑tenant_id
+            existing_key = db.query(ModelApiKey).join(
+                ModelApiKey.model_configs
+            ).filter(
                 ModelApiKey.api_key == data.api_key,
                 ModelApiKey.provider == data.provider,
-                ModelApiKey.model_name == model_name
+                ModelApiKey.model_name == model_name,
+                ModelConfig.tenant_id == model_config.tenant_id
             ).first()
             
             if existing_key:
@@ -542,11 +551,14 @@ class ModelApiKeyService:
                 if not model_config:
                     raise BusinessException("模型配置不存在", BizCode.MODEL_NOT_FOUND)
                 
-                # 检查API Key是否已存在(包括软删除)
-                existing_key = db.query(ModelApiKey).filter(
+                # 检查API Key是否已存在(包括软删除)，需要考虑tenant_id
+                existing_key = db.query(ModelApiKey).join(
+                    ModelApiKey.model_configs
+                ).filter(
                     ModelApiKey.api_key == api_key_data.api_key,
                     ModelApiKey.provider == api_key_data.provider,
-                    ModelApiKey.model_name == api_key_data.model_name
+                    ModelApiKey.model_name == api_key_data.model_name,
+                    ModelConfig.tenant_id == model_config.tenant_id
                 ).first()
 
                 if existing_key: