diff --git a/docker/docker-compose.yml b/docker/docker-compose.yml
index 8684f02..6328288 100644
--- a/docker/docker-compose.yml
+++ b/docker/docker-compose.yml
@@ -1,10 +1,12 @@
 # =============================================================================
 # MinerU ROCm Docker Compose 配置
 # 原生 Linux + AMD GPU 环境
+#
+# 架构：Gradio / API → nginx (8000) → worker0 (8001) / worker1 (8002)
 # =============================================================================
 
 services:
-  # --- WebUI 前端（纯前端，不本地处理，通过 Router → Worker 处理）---
+  # --- WebUI 前端（纯前端，通过 nginx 分发到 worker）---
   gradio:
     image: mineru-rocm:7.2.1
     profiles: ["gradio"]
@@ -16,7 +18,7 @@ services:
       - "10002:7860"
     environment:
       - GRADIO_SERVER_NAME=0.0.0.0
-      - MINERU_API_BASE=http://mineru-router:8000
+      - MINERU_API_BASE=http://mineru-nginx:8000
       - MINERU_MODEL_SOURCE=${MINERU_MODEL_SOURCE:-huggingface}
       - HF_HUB_CACHE=${HF_HUB_CACHE:-/opt/models/huggingface}
       - MODELSCOPE_CACHE=${MODELSCOPE_CACHE:-/opt/models/modelscope}
@@ -30,9 +32,9 @@ services:
         "/opt/mineru_venv/bin/python", "/opt/scripts/gradio_client.py",
       ]
     depends_on:
-      - router
+      - nginx
 
-  # --- 双卡 Worker（GPU 算力，无 profile，始终可用）---
+  # --- 双卡 Worker（GPU 算力）---
   worker0:
     image: mineru-rocm:7.2.1
     build:
@@ -94,32 +96,14 @@ services:
       - ./scripts:/opt/scripts:ro
     command: ["mineru-api", "--host", "0.0.0.0", "--port", "8002", "--allow-public-http-client"]
 
-  router:
-    image: mineru-rocm:7.2.1
-    container_name: mineru-router
-    stdin_open: true
-    tty: true
-    ipc: host
+  # --- Nginx 负载均衡（替换有 Bug 的 mineru-router）---
+  nginx:
+    image: nginx:alpine
+    container_name: mineru-nginx
     ports:
       - "8000:8000"
-    environment:
-      - MINERU_MODEL_SOURCE=${MINERU_MODEL_SOURCE:-huggingface}
-      - HF_HUB_CACHE=${HF_HUB_CACHE:-/opt/models/huggingface}
-      - MODELSCOPE_CACHE=${MODELSCOPE_CACHE:-/opt/models/modelscope}
     volumes:
-      - ${INPUT_DIR:-./data/input}:/data/input:ro
-      - ${OUTPUT_DIR:-./data/output}:/data/output
-      - ${MODEL_DIR:-./data/models}:/opt/models
-      - ./scripts:/opt/scripts:ro
-    command:
-      [
-        "mineru-router",
-        "--api-urls",
-        "http://mineru-worker0:8001,http://mineru-worker1:8002",
-        "--host", "0.0.0.0",
-        "--port", "8000",
-        "--allow-public-http-client",
-      ]
+      - ./nginx.conf:/etc/nginx/conf.d/default.conf:ro
     depends_on:
       - worker0
       - worker1
diff --git a/docker/nginx.conf b/docker/nginx.conf
new file mode 100644
index 0000000..99aac75
--- /dev/null
+++ b/docker/nginx.conf
@@ -0,0 +1,22 @@
+upstream mineru_workers {
+    # 轮询分发
+    server mineru-worker0:8001;
+    server mineru-worker1:8002;
+}
+
+server {
+    listen 8000;
+    server_name _;
+
+    # 文件上传可能很大，调大限制
+    client_max_body_size 500m;
+
+    location / {
+        proxy_pass http://mineru_workers;
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_read_timeout 600s;  # 长任务需要
+        proxy_send_timeout 600s;
+    }
+}
diff --git a/docker/scripts/gradio_client.py b/docker/scripts/gradio_client.py
index c654ec2..ef02183 100644
--- a/docker/scripts/gradio_client.py
+++ b/docker/scripts/gradio_client.py
@@ -17,44 +17,40 @@ from pathlib import Path
 import gradio as gr
 import httpx
 
-API_BASE = os.environ.get("MINERU_API_BASE", "http://mineru-router:8000")
-DEFAULT_BACKEND = os.environ.get("MINERU_BACKEND", "hybrid-auto-engine")
+API_BASE = os.environ.get("MINERU_API_BASE", "http://mineru-nginx:8000")
+DEFAULT_BACKEND = os.environ.get("MINERU_BACKEND", "hybrid-engine")
 DEFAULT_LANG = os.environ.get("MINERU_LANG", "ch")
 POLL_INTERVAL = float(os.environ.get("MINERU_POLL_INTERVAL", "1.0"))
 MAX_WAIT = float(os.environ.get("MINERU_MAX_WAIT", "600"))
 
 
 async def discover_api(client: httpx.AsyncClient) -> str:
-    """探测实际可用的 API 前缀: /api/v1/tasks 或 /tasks"""
+    """探测实际可用的 API 前缀: /file_parse 端点"""
     candidates = [
-        f"{API_BASE}/api/v1/health",
-        f"{API_BASE}/health",
+        f"{API_BASE}/openapi.json",
         f"{API_BASE}/docs",
     ]
     for url in candidates:
         try:
             r = await client.get(url, timeout=5)
-            if r.status_code < 500:
-                # FastAPI docs → /api/v1 ; plain health → /
-                if "/api/v1" in str(r.url):
-                    return "/api/v1/tasks"
-                return "/tasks"
+            if r.status_code == 200:
+                return ""  # worker uses root-level endpoints like /file_parse
         except Exception:
             continue
-    # 默认新版 API
-    return "/api/v1/tasks"
+    return ""
 
 
 async def submit_task(client: httpx.AsyncClient, api_prefix: str,
                       file_path: str, file_name: str,
                       backend: str, lang: str) -> dict:
-    """提交解析任务"""
-    submit_url = f"{API_BASE}{api_prefix}/submit"
+    """提交解析任务到 worker 的 /file_parse 端点"""
+    submit_url = f"{API_BASE}/file_parse"
     with open(file_path, "rb") as f:
-        files = {"file": (file_name, f, "application/pdf")}
+        files = {"files": (file_name, f, "application/pdf")}
         data = {
             "backend": backend,
-            "lang": lang,
+            "lang_list": lang,
+            "parse_method": "auto",
         }
         r = await client.post(submit_url, files=files, data=data, timeout=30)
         r.raise_for_status()
@@ -64,7 +60,7 @@ async def submit_task(client: httpx.AsyncClient, api_prefix: str,
 async def get_task_status(client: httpx.AsyncClient, api_prefix: str,
                           task_id: str) -> dict:
     """查询任务状态"""
-    url = f"{API_BASE}{api_prefix}/{task_id}"
+    url = f"{API_BASE}/tasks/{task_id}"
     r = await client.get(url, timeout=10)
     r.raise_for_status()
     return r.json()
@@ -72,24 +68,14 @@ async def get_task_status(client: httpx.AsyncClient, api_prefix: str,
 
 async def download_result(client: httpx.AsyncClient, api_prefix: str,
                           task_id: str, output_dir: str) -> str:
-    """下载任务结果。尝试多种 endpoint 格式"""
-    candidates = [
-        f"{api_prefix}/{task_id}/data",
-        f"{api_prefix}/{task_id}/result",
-    ]
-    for suffix in candidates:
-        url = f"{API_BASE}{suffix}"
-        try:
-            r = await client.get(url, timeout=60, follow_redirects=True)
-            if r.status_code == 200:
-                # 下载 zip 文件
-                zip_path = os.path.join(output_dir, f"{task_id}.zip")
-                with open(zip_path, "wb") as f:
-                    f.write(r.content)
-                return zip_path
-        except Exception:
-            continue
-    raise RuntimeError(f"Failed to download result for task {task_id}")
+    """下载任务结果"""
+    url = f"{API_BASE}/tasks/{task_id}/result"
+    r = await client.get(url, timeout=60, follow_redirects=True)
+    r.raise_for_status()
+    zip_path = os.path.join(output_dir, f"{task_id}.zip")
+    with open(zip_path, "wb") as f:
+        f.write(r.content)
+    return zip_path
 
 
 def extract_readme(zip_path: str, output_dir: str) -> str:
@@ -127,18 +113,8 @@ async def process_pdf(file_obj, backend, lang, progress=gr.Progress()):
         progress(0.15, desc="Submitting task...")
         try:
             submit_resp = await submit_task(client, api_prefix, file_path, file_name, backend, lang)
-        except httpx.HTTPStatusError as e:
-            # 尝试旧版 endpoint（不带 /submit 后缀）
-            alt_data = {"backend": backend, "lang": lang}
-            try:
-                alt_url = f"{API_BASE}{api_prefix}"
-                with open(file_path, "rb") as f:
-                    files = {"file": (file_name, f, "application/pdf")}
-                    r = await client.post(alt_url, files=files, data=alt_data, timeout=30)
-                    r.raise_for_status()
-                    submit_resp = r.json()
-            except Exception as e2:
-                return f"Task submission failed: {e}\nAlt attempt: {e2}", "", ""
+        except Exception as e:
+            return f"Task submission failed: {e}", "", ""
 
         task_id = submit_resp.get("task_id") or submit_resp.get("data", {}).get("task_id")
         if not task_id: