diff --git a/api/app/controllers/service/app_api_controller.py b/api/app/controllers/service/app_api_controller.py
index b34015a7..e190115a 100644
--- a/api/app/controllers/service/app_api_controller.py
+++ b/api/app/controllers/service/app_api_controller.py
@@ -21,7 +21,7 @@ from app.schemas.api_key_schema import ApiKeyAuth
 from app.services import workspace_service
 from app.services.app_chat_service import AppChatService, get_app_chat_service
 from app.services.conversation_service import ConversationService, get_conversation_service
-from app.utils.app_config_utils import dict_to_multi_agent_config, dict_to_workflow_config, agent_config_4_app_release
+from app.utils.app_config_utils import dict_to_multi_agent_config, dict_to_workflow_config, agent_config_4_app_release, multi_agent_config_4_app_release
 from app.services.app_service import get_app_service, AppService
 
 router = APIRouter(prefix="/app", tags=["V1 - App API"])
@@ -182,7 +182,7 @@ async def chat(
         return success(data=conversation_schema.ChatResponse(**result).model_dump(mode="json"))
     elif app_type == AppType.MULTI_AGENT:
         # 多 Agent 流式返回
-        config = dict_to_multi_agent_config(app.current_release.config,app.id)
+        config = multi_agent_config_4_app_release(app.current_release)
         if payload.stream:
             async def event_generator():
                 async for event in app_chat_service.multi_agent_chat_stream(
diff --git a/api/app/services/app_service.py b/api/app/services/app_service.py
index 869e2a19..95bcc07a 100644
--- a/api/app/services/app_service.py
+++ b/api/app/services/app_service.py
@@ -1203,11 +1203,11 @@ class AppService:
             self._check_multi_agent_config(app_id)
 
             # 3. 获取主 Agent 的模型配置 ID
-            master_agent = self.db.get(AgentConfig, multi_agent_cfg.master_agent_id)
-            default_model_config_id = master_agent.default_model_config_id if master_agent else None
+            default_model_config_id = multi_agent_cfg.default_model_config_id
 
             # 4. 构建配置快照
             config = {
+                "model_parameters":multi_agent_cfg.model_parameters,
                 "master_agent_id": str(multi_agent_cfg.master_agent_id),
                 "orchestration_mode": multi_agent_cfg.orchestration_mode,
                 "sub_agents": multi_agent_cfg.sub_agents,
@@ -1220,7 +1220,7 @@ class AppService:
                 "多智能体应用发布配置准备完成",
                 extra={
                     "app_id": str(app_id),
-                    "master_agent_id": str(multi_agent_cfg.master_agent_id),
+                    "default_model_config_id": str(default_model_config_id),
                     "sub_agent_count": len(multi_agent_cfg.sub_agents) if multi_agent_cfg.sub_agents else 0,
                     "orchestration_mode": multi_agent_cfg.orchestration_mode
                 }
diff --git a/api/app/utils/app_config_utils.py b/api/app/utils/app_config_utils.py
index 85f2e7c7..4fe692c1 100644
--- a/api/app/utils/app_config_utils.py
+++ b/api/app/utils/app_config_utils.py
@@ -9,7 +9,8 @@ from typing import Dict, Any, Optional
 from datetime import datetime
 
 from app.models import AppRelease
-
+from app.models.agent_app_config_model import AgentConfig
+from app.models.multi_agent_model import MultiAgentConfig
 
 class AgentConfigProxy:
     """Proxy class for AgentConfig (legacy compatibility)"""
@@ -24,20 +25,10 @@ class AgentConfigProxy:
         self.default_model_config_id = release.default_model_config_id
 
 
-def agent_config_4_app_release(release: AppRelease ):
-    from app.models.agent_app_config_model import AgentConfig
-    # Create AgentConfig instance
-    # config = {
-    #     "system_prompt": agent_cfg.system_prompt,
-    #     "model_parameters": agent_cfg.model_parameters,
-    #     "knowledge_retrieval": agent_cfg.knowledge_retrieval,
-    #     "memory": agent_cfg.memory,
-    #     "variables": agent_cfg.variables or [],
-    #     "tools": agent_cfg.tools or {},
-    # }
-    #
-    config_dict = release.config
+def agent_config_4_app_release(release: AppRelease )  -> AgentConfig:
 
+    config_dict = release.config
+ 
     agent_config = AgentConfig(
         app_id=release.app_id,
         system_prompt=config_dict.get("system_prompt"),
@@ -51,6 +42,26 @@ def agent_config_4_app_release(release: AppRelease ):
 
     return agent_config
 
+def multi_agent_config_4_app_release(release: AppRelease ) -> MultiAgentConfig:
+
+    config_dict = release.config
+    
+
+    agent_config = MultiAgentConfig(
+        app_id=release.app_id,        
+        default_model_config_id=release.default_model_config_id,
+        model_parameters=config_dict.get("model_parameters"),
+        master_agent_id=config_dict.get("master_agent_id"),
+        master_agent_name=config_dict.get("master_agent_name"),
+        orchestration_mode=config_dict.get("orchestration_mode", "conditional"),
+        sub_agents=config_dict.get("sub_agents", []),
+        routing_rules=config_dict.get("routing_rules"),
+        execution_config=config_dict.get("execution_config", {}),
+        aggregation_strategy=config_dict.get("aggregation_strategy", "merge"),
+        
+    )
+
+    return agent_config
 
 def dict_to_multi_agent_config(config_dict: Dict[str, Any], app_id: Optional[uuid.UUID] = None):
     """Convert dict to MultiAgentConfig model object