diff --git a/src/routers/deep_agent_chat.py b/src/routers/deep_agent_chat.py
index b9bc830..d77896b 100755
--- a/src/routers/deep_agent_chat.py
+++ b/src/routers/deep_agent_chat.py
@@ -146,6 +146,13 @@ async def chat_stream(request: DeepAgentChatRequest):
                                                    "Please strictly follow the above settings in subsequent conversations。"
                 )
                 initial_messages.append(SystemMessage(content=system_prompt))
+            design_backend = f"""
+            <design_constraints>
+            Category: {cp.type or 'unspecified'}
+            region: {cp.region or 'unspecified'}
+            style: {cp.style or 'unspecified'}
+            </design_constraints>
+            """
 
     # 6. 分支处理
     if is_branching:
@@ -195,6 +202,9 @@ async def chat_stream(request: DeepAgentChatRequest):
         if input_image_content:
             content[0]["text"] += input_image_content
 
+        if design_backend:
+            content[0]["text"] += design_backend
+
         message_list = [{"role": "user", "content": content}]
         final_messages = {"messages": message_list, "files": files}
         logger.info(final_messages)
@@ -210,7 +220,7 @@ async def chat_stream(request: DeepAgentChatRequest):
                 subgraphs=True,
                 context=Context(use_report=request.use_report,
                                 language=request.language,
-                                type=request.config_params.type ,
+                                type=request.config_params.type,
                                 region=request.config_params.region,
                                 style=request.config_params.style,
                                 ),
diff --git a/src/server/deep_agent/agents/main_agent.py b/src/server/deep_agent/agents/main_agent.py
index df3de7b..a82b1aa 100755
--- a/src/server/deep_agent/agents/main_agent.py
+++ b/src/server/deep_agent/agents/main_agent.py
@@ -106,6 +106,8 @@ def user_role_prompt(request: ModelRequest) -> str:
 
     # ==================== 家具设计背景（加强版） ====================
     design_context = f"""
+    当用户消息中首次出现 <design_constraints> 标签时，你必须将标签内的品类、区域、风格视为本次对话的**核心设计背景**,所有设计决策、图片生成、线稿、渲染图都必须严格符合该背景。
+
     [Internal highest priority design background - only for thinking, not output to users]
     Furniture design settings selected by the current user:
     - Category: {ctx.type or 'unspecified'}
@@ -150,7 +152,7 @@ def user_role_prompt(request: ModelRequest) -> str:
     """
     # ==================== 最终组合（设计背景放最前面） ====================
     final_prompt = (
-            design_context +
+            # design_context +
             "\n\n" +
             language_prompt +
             "\n\n" +
diff --git a/src/server/deep_agent/init_prompt.py b/src/server/deep_agent/init_prompt.py
index 7ea33f6..f9d427e 100755
--- a/src/server/deep_agent/init_prompt.py
+++ b/src/server/deep_agent/init_prompt.py
@@ -191,21 +191,20 @@ When generating new furniture sketches:
 
 【2】When the user requests reports, research, analysis, or summaries:
 - First check if sufficient user profile information exists.
-- If information is missing (style, room type, theme, budget, etc.): Call `user_profile_subagent` to collect data. Do not generate the report directly.
-- If the user profile is already complete: Call `research_subagent` to generate the report.
+- If information is missing: Use the **task** tool to dispatch the **user_profile_subagent** subagent. Do NOT attempt to call user_profile_subagent as a standalone tool.
+- If the user profile is already complete: Use the **task** tool to dispatch the **research_subagent** subagent.
 
-【3】User Profile Priority Rules
-Whenever the user input involves:
-- Expressing design requirements
-- Providing or modifying preferences (style, room type, budget, etc.)
-- Supplementing report-related information
-→ Prioritize calling `user_profile_subagent` to update or collect user profile data.
+Example of correct invocation:
+  task(subagent_name="user_profile_subagent", input="收集用户的风格偏好、房间类型、预算等信息")
+
+【3】User Profile Priority Rules (Limited Scope)
+- **This rule only applies to report/research/analysis/summary tasks.**
+- Furniture design, image generation and editing tasks are exempted from user profile collection and must not dispatch user_profile_subagent.
 
 【4】Scheduling Principles
-- `user_profile_subagent` is only responsible for **information collection**.
-- `research_subagent` is only responsible for **report generation**.
-- `generate_furniture_sketch_prompts` is only responsible for **professional prompt generation for furniture sketches**.
-Do not mix their responsibilities.
+- **user_profile_subagent** is a subagent (not a tool) — dispatch it via the **task** tool.
+- **research_subagent** is a subagent (not a tool) — dispatch it via the **task** tool.
+- Do NOT call them as direct tool calls.
 
 ========================
 Critical Prohibitions (Highest Priority)