diff --git a/change1/service1.py b/change1/service1.py
index 236824d..90ca5bc 100644
--- a/change1/service1.py
+++ b/change1/service1.py
@@ -29,6 +29,11 @@ COMFYUI_URL = "http://112.126.94.241:28188"
 COMFYUI_URL_BACKUP = "http://112.126.94.241:38188"
 WORKFLOW_PATH = Path(__file__).parent / "change1.json"
 
+_cred_dir = Path(__file__).parent.parent
+COMFYUI_USER = (_cred_dir / "user.txt").read_text(encoding="utf-8").strip()
+COMFYUI_PASS = (_cred_dir / "password.txt").read_text(encoding="utf-8").strip()
+COMFYUI_AUTH = (COMFYUI_USER, COMFYUI_PASS)
+
 NODE_MODEL = "11"   # 输入图（LoadImage）
 NODE_OUTPUT = "33"  # 输出（SaveImage）
 NODE_PROMPT = "31"  # 文本提示（PrimitiveStringMultiline）
@@ -82,11 +87,11 @@ def decode_base64_image(b64_str: str) -> bytes:
 
 
 async def check_comfyui_alive(base_url: str, timeout: float = 3.0) -> bool:
-    """检查指定的 ComfyUI 服务器是否可用"""
+    """检查指定的 ComfyUI 服务器是否可用（能连通且非 5xx 即视为可用）"""
     try:
-        async with httpx.AsyncClient(timeout=timeout) as client:
+        async with httpx.AsyncClient(timeout=timeout, auth=COMFYUI_AUTH) as client:
             resp = await client.get(f"{base_url}/system_stats")
-            return resp.status_code == 200
+            return resp.status_code < 500
     except Exception as e:
         print(f"ComfyUI 健康检查失败 {base_url}: {e}")
         return False
@@ -169,7 +174,7 @@ async def try_on(req: TryOnRequest):
     if desc:
         workflow[NODE_PROMPT]["inputs"] = {"value": desc}
 
-    async with httpx.AsyncClient(timeout=60.0) as client:
+    async with httpx.AsyncClient(timeout=60.0, auth=COMFYUI_AUTH) as client:
         try:
             model_bytes = decode_base64_image(req.model_image)
         except Exception as e:
@@ -190,7 +195,7 @@ async def try_on(req: TryOnRequest):
         except httpx.HTTPError as e:
             raise HTTPException(status_code=502, detail=f"提交工作流失败: {e}")
 
-        async with httpx.AsyncClient(timeout=30.0) as poll_client:
+        async with httpx.AsyncClient(timeout=30.0, auth=COMFYUI_AUTH) as poll_client:
             outputs = await wait_for_result(poll_client, comfyui_url, prompt_id, timeout=300)
 
         node_output = outputs.get(NODE_OUTPUT)
@@ -206,7 +211,7 @@ async def try_on(req: TryOnRequest):
         subfolder = img_info.get("subfolder", "")
         type_ = img_info.get("type", "output")
 
-        async with httpx.AsyncClient(timeout=30.0) as dl_client:
+        async with httpx.AsyncClient(timeout=30.0, auth=COMFYUI_AUTH) as dl_client:
             result_bytes = await fetch_image_bytes(dl_client, comfyui_url, filename, subfolder, type_)
 
     suffix = Path(filename).suffix or ".png"
diff --git a/change2/service2.py b/change2/service2.py
index 8c12e6c..f45afae 100644
--- a/change2/service2.py
+++ b/change2/service2.py
@@ -31,6 +31,11 @@ COMFYUI_URL = "http://112.126.94.241:28188"
 COMFYUI_URL_BACKUP = "http://112.126.94.241:38188"
 WORKFLOW_PATH = Path(__file__).parent / "change2_1_ex.json"
 
+_cred_dir = Path(__file__).parent.parent
+COMFYUI_USER = (_cred_dir / "user.txt").read_text(encoding="utf-8").strip()
+COMFYUI_PASS = (_cred_dir / "password.txt").read_text(encoding="utf-8").strip()
+COMFYUI_AUTH = (COMFYUI_USER, COMFYUI_PASS)
+
 # WORKFLOW_PATH = Path(__file__).parent / "change_fast2.json"
 
 # 节点 ID 映射
@@ -99,11 +104,11 @@ def decode_base64_image(b64_str: str) -> bytes:
 
 
 async def check_comfyui_alive(base_url: str, timeout: float = 3.0) -> bool:
-    """检查指定的 ComfyUI 服务器是否可用"""
+    """检查指定的 ComfyUI 服务器是否可用（能连通且非 5xx 即视为可用）"""
     try:
-        async with httpx.AsyncClient(timeout=timeout) as client:
+        async with httpx.AsyncClient(timeout=timeout, auth=COMFYUI_AUTH) as client:
             resp = await client.get(f"{base_url}/system_stats")
-            return resp.status_code == 200
+            return resp.status_code < 500
     except Exception as e:
         print(f"ComfyUI 健康检查失败 {base_url}: {e}")
         return False
@@ -187,7 +192,7 @@ async def try_on(req: TryOnRequest):
     if desc:
         workflow[NODE_PROMPT]["inputs"] = {"value": desc}
 
-    async with httpx.AsyncClient(timeout=60.0) as client:
+    async with httpx.AsyncClient(timeout=60.0, auth=COMFYUI_AUTH) as client:
         try:
             model_bytes = decode_base64_image(req.model_image)
             shirt_bytes = decode_base64_image(req.shirt_image)
@@ -214,7 +219,7 @@ async def try_on(req: TryOnRequest):
         except httpx.HTTPError as e:
             raise HTTPException(status_code=502, detail=f"提交工作流失败: {e}")
 
-        async with httpx.AsyncClient(timeout=30.0) as poll_client:
+        async with httpx.AsyncClient(timeout=30.0, auth=COMFYUI_AUTH) as poll_client:
             outputs = await wait_for_result(poll_client, comfyui_url, prompt_id, timeout=300)
 
         node_output = outputs.get(NODE_OUTPUT)
@@ -230,7 +235,7 @@ async def try_on(req: TryOnRequest):
         subfolder = img_info.get("subfolder", "")
         type_ = img_info.get("type", "output")
 
-        async with httpx.AsyncClient(timeout=30.0) as dl_client:
+        async with httpx.AsyncClient(timeout=30.0, auth=COMFYUI_AUTH) as dl_client:
             result_bytes = await fetch_image_bytes(dl_client, comfyui_url, filename, subfolder, type_)
 
     # 缩放到 768x1024
diff --git a/change3/service3.py b/change3/service3.py
index 5c3b0bd..7d492cf 100644
--- a/change3/service3.py
+++ b/change3/service3.py
@@ -30,6 +30,11 @@ COMFYUI_URL = "http://112.126.94.241:28188"
 COMFYUI_URL_BACKUP = "http://112.126.94.241:38188"
 WORKFLOW_PATH = Path(__file__).parent / "change2_2_0308.json"
 
+_cred_dir = Path(__file__).parent.parent
+COMFYUI_USER = (_cred_dir / "user.txt").read_text(encoding="utf-8").strip()
+COMFYUI_PASS = (_cred_dir / "password.txt").read_text(encoding="utf-8").strip()
+COMFYUI_AUTH = (COMFYUI_USER, COMFYUI_PASS)
+
 # WORKFLOW_PATH = Path(__file__).parent / "change_fast3.json"
 
 # 节点 ID 映射
@@ -90,11 +95,11 @@ def decode_base64_image(b64_str: str) -> bytes:
 
 
 async def check_comfyui_alive(base_url: str, timeout: float = 3.0) -> bool:
-    """检查指定的 ComfyUI 服务器是否可用"""
+    """检查指定的 ComfyUI 服务器是否可用（能连通且非 5xx 即视为可用）"""
     try:
-        async with httpx.AsyncClient(timeout=timeout) as client:
+        async with httpx.AsyncClient(timeout=timeout, auth=COMFYUI_AUTH) as client:
             resp = await client.get(f"{base_url}/system_stats")
-            return resp.status_code == 200
+            return resp.status_code < 500
     except Exception as e:
         print(f"ComfyUI 健康检查失败 {base_url}: {e}")
         return False
@@ -178,7 +183,7 @@ async def try_on(req: TryOnRequest):
     if desc:
         workflow[NODE_PROMPT]["inputs"] = {"value": desc}
 
-    async with httpx.AsyncClient(timeout=60.0) as client:
+    async with httpx.AsyncClient(timeout=60.0, auth=COMFYUI_AUTH) as client:
         try:
             model_bytes = decode_base64_image(req.model_image)
             shirt_bytes = decode_base64_image(req.shirt_image)
@@ -209,7 +214,7 @@ async def try_on(req: TryOnRequest):
         except httpx.HTTPError as e:
             raise HTTPException(status_code=502, detail=f"提交工作流失败: {e}")
 
-        async with httpx.AsyncClient(timeout=30.0) as poll_client:
+        async with httpx.AsyncClient(timeout=30.0, auth=COMFYUI_AUTH) as poll_client:
             outputs = await wait_for_result(poll_client, comfyui_url, prompt_id, timeout=300)
 
         node_output = outputs.get(NODE_OUTPUT)
@@ -225,7 +230,7 @@ async def try_on(req: TryOnRequest):
         subfolder = img_info.get("subfolder", "")
         type_ = img_info.get("type", "output")
 
-        async with httpx.AsyncClient(timeout=30.0) as dl_client:
+        async with httpx.AsyncClient(timeout=30.0, auth=COMFYUI_AUTH) as dl_client:
             result_bytes = await fetch_image_bytes(dl_client, comfyui_url, filename, subfolder, type_)
 
     # 缩放到 768x1024
diff --git a/password.txt b/password.txt
new file mode 100644
index 0000000..712e6fa
--- /dev/null
+++ b/password.txt
@@ -0,0 +1 @@
+your888password
\ No newline at end of file
diff --git a/user.txt b/user.txt
new file mode 100644
index 0000000..f77b004
--- /dev/null
+++ b/user.txt
@@ -0,0 +1 @@
+admin
\ No newline at end of file