diff --git a/experiencemaker/op/summarizer/pdf_preprocess_op.py b/experiencemaker/op/summarizer/pdf_preprocess_op.py
new file mode 100644
index 00000000..9bf10014
--- /dev/null
+++ b/experiencemaker/op/summarizer/pdf_preprocess_op.py
@@ -0,0 +1,503 @@
+#!/usr/bin/env python3
+"""
+MinerU PDF 处理器
+返回 Markdown 内容和结构化的 content_list
+"""
+
+import os
+import json
+import subprocess
+import tempfile
+import logging
+from pathlib import Path
+from typing import Dict, List, Any, Tuple, Optional, Union
+import platform
+import re
+
+
+class MinerUPDFProcessor:
+    """
+    基于 MinerU 的 PDF 处理器
+    仿照 RAGAnything 的处理逻辑，但独立使用 MinerU
+    """
+
+    def __init__(self, log_level: str = "INFO"):
+        """
+        初始化处理器
+
+        Args:
+            log_level: 日志级别 ("DEBUG", "INFO", "WARNING", "ERROR")
+        """
+        # 设置日志
+        logging.basicConfig(
+            level=getattr(logging, log_level.upper()),
+            format='%(asctime)s - %(name)s - %(levelname)s - %(message)s'
+        )
+        self.logger = logging.getLogger(__name__)
+
+        # 检查 MinerU 安装
+        if not self.check_mineru_installation():
+            raise RuntimeError(
+                "MinerU 未正确安装。请使用以下命令安装：\n"
+                "pip install -U 'mineru[core]' 或 uv pip install -U 'mineru[core]'"
+            )
+
+    def check_mineru_installation(self) -> bool:
+        """检查 MinerU 是否正确安装"""
+        try:
+            subprocess_kwargs = {
+                "capture_output": True,
+                "text": True,
+                "check": True,
+                "encoding": "utf-8",
+                "errors": "ignore",
+            }
+
+            # Windows 下隐藏控制台窗口
+            if platform.system() == "Windows":
+                subprocess_kwargs["creationflags"] = subprocess.CREATE_NO_WINDOW
+
+            result = subprocess.run(["mineru", "--version"], **subprocess_kwargs)
+            self.logger.debug(f"MinerU 版本: {result.stdout.strip()}")
+            return True
+        except (subprocess.CalledProcessError, FileNotFoundError):
+            return False
+
+    def _run_mineru_command(
+            self,
+            input_path: Union[str, Path],
+            output_dir: Union[str, Path],
+            method: str = "auto",
+            lang: Optional[str] = None,
+            backend: str = "pipeline",
+            start_page: Optional[int] = None,
+            end_page: Optional[int] = None,
+            formula: bool = True,
+            table: bool = True,
+            device: Optional[str] = None,
+            source: str = "modelscope",
+            vlm_url: Optional[str] = None,
+    ) -> None:
+        """
+        运行 MinerU 命令行工具
+
+        Args:
+            input_path: 输入文件路径
+            output_dir: 输出目录路径
+            method: 解析方法 (auto, txt, ocr)
+            lang: 文档语言，用于 OCR 优化
+            backend: 解析后端
+            start_page: 起始页码 (0-based)
+            end_page: 结束页码 (0-based)
+            formula: 启用公式解析
+            table: 启用表格解析
+            device: 推理设备
+            source: 模型来源
+            vlm_url: VLM 服务器 URL（当 backend 为 vlm-sglang-client 时需要）
+        """
+        cmd = [
+            "mineru",
+            "-p", str(input_path),
+            "-o", str(output_dir),
+            "-m", method,
+            # "-b", backend,
+            # "--source", source,
+        ]
+
+        # 添加可选参数
+        if lang:
+            cmd.extend(["-l", lang])
+        if start_page is not None:
+            cmd.extend(["-s", str(start_page)])
+        if end_page is not None:
+            cmd.extend(["-e", str(end_page)])
+        if not formula:
+            cmd.extend(["-f", "false"])
+        if not table:
+            cmd.extend(["-t", "false"])
+        if device:
+            cmd.extend(["-d", device])
+        if vlm_url:
+            cmd.extend(["-u", vlm_url])
+
+        try:
+            subprocess_kwargs = {
+                "capture_output": True,
+                "text": True,
+                "check": True,
+                "encoding": "utf-8",
+                "errors": "ignore",
+            }
+
+            # Windows 下隐藏控制台窗口
+            if platform.system() == "Windows":
+                subprocess_kwargs["creationflags"] = subprocess.CREATE_NO_WINDOW
+
+            self.logger.info(f"执行 MinerU 命令: {' '.join(cmd)}")
+            result = subprocess.run(cmd, **subprocess_kwargs)
+
+            self.logger.info("MinerU 命令执行成功")
+            if result.stdout:
+                self.logger.debug(f"MinerU 输出: {result.stdout}")
+
+        except subprocess.CalledProcessError as e:
+            self.logger.error(f"MinerU 命令执行错误: {e}")
+            if e.stderr:
+                self.logger.error(f"错误详情: {e.stderr}")
+            raise
+        except FileNotFoundError:
+            raise RuntimeError(
+                "mineru 命令未找到。请确保 MinerU 2.0 已正确安装：\n"
+                "pip install -U 'mineru[core]' 或 uv pip install -U 'mineru[core]'"
+            )
+
+    def _read_output_files(
+            self,
+            output_dir: Path,
+            file_stem: str,
+            method: str = "auto"
+    ) -> Tuple[List[Dict[str, Any]], str]:
+        """
+        读取 MinerU 生成的输出文件
+
+        Args:
+            output_dir: 输出目录
+            file_stem: 文件名（不含扩展名）
+            method: 解析方法
+
+        Returns:
+            Tuple[List[Dict[str, Any]], str]: (content_list, markdown_content)
+        """
+        # 查找生成的文件
+        md_file = output_dir / f"{file_stem}.md"
+        json_file = output_dir / f"{file_stem}_content_list.json"
+        images_base_dir = output_dir
+
+        # 检查子目录结构
+        file_stem_subdir = output_dir / file_stem
+        if file_stem_subdir.exists():
+            md_file = file_stem_subdir / method / f"{file_stem}.md"
+            json_file = file_stem_subdir / method / f"{file_stem}_content_list.json"
+            images_base_dir = file_stem_subdir / method
+
+        # 读取 Markdown 内容
+        md_content = ""
+        if md_file.exists():
+            try:
+                with open(md_file, "r", encoding="utf-8") as f:
+                    md_content = f.read()
+                self.logger.info(f"成功读取 Markdown 文件: {md_file}")
+            except Exception as e:
+                self.logger.warning(f"无法读取 Markdown 文件 {md_file}: {e}")
+        else:
+            self.logger.warning(f"Markdown 文件不存在: {md_file}")
+
+        # 读取 JSON 内容列表
+        content_list = []
+        if json_file.exists():
+            try:
+                with open(json_file, "r", encoding="utf-8") as f:
+                    content_list = json.load(f)
+
+                # 修复相对路径为绝对路径
+                self.logger.info(f"修复图片路径，基础目录: {images_base_dir}")
+                for item in content_list:
+                    if isinstance(item, dict):
+                        for field_name in ["img_path", "table_img_path", "equation_img_path"]:
+                            if field_name in item and item[field_name]:
+                                img_path = item[field_name]
+                                if not os.path.isabs(img_path):
+                                    absolute_img_path = (images_base_dir / img_path).resolve()
+                                    item[field_name] = str(absolute_img_path)
+                                    self.logger.debug(f"更新 {field_name}: {img_path} -> {item[field_name]}")
+
+                self.logger.info(f"成功读取 JSON 文件: {json_file}, 包含 {len(content_list)} 个内容块")
+
+            except Exception as e:
+                self.logger.warning(f"无法读取 JSON 文件 {json_file}: {e}")
+        else:
+            self.logger.warning(f"JSON 文件不存在: {json_file}")
+
+        return content_list, md_content
+
+    def process_pdf(
+            self,
+            pdf_path: Union[str, Path],
+            output_dir: Optional[Union[str, Path]] = None,
+            method: str = "auto",
+            lang: Optional[str] = None,
+            backend: str = "pipeline",
+            **kwargs
+    ) -> Tuple[List[Dict[str, Any]], str]:
+        """
+        处理 PDF 文件
+
+        Args:
+            pdf_path: PDF 文件路径
+            output_dir: 输出目录路径（可选，默认在 PDF 文件同目录下创建）
+            method: 解析方法 ("auto", "txt", "ocr")
+            lang: 文档语言，用于 OCR 优化 (如 "ch", "en", "ja")
+            backend: 解析后端 ("pipeline", "vlm-transformers", "vlm-sglang-engine", "vlm-sglang-client")
+            **kwargs: 其他 MinerU 参数
+
+        Returns:
+            Tuple[List[Dict[str, Any]], str]: (content_list, markdown_content)
+
+        Raises:
+            FileNotFoundError: PDF 文件不存在
+            RuntimeError: MinerU 处理失败
+        """
+        # 转换为 Path 对象
+        pdf_path = Path(pdf_path)
+        if not pdf_path.exists():
+            raise FileNotFoundError(f"PDF 文件不存在: {pdf_path}")
+
+        if not pdf_path.suffix.lower() == '.pdf':
+            raise ValueError(f"文件不是 PDF 格式: {pdf_path}")
+
+        name_without_suffix = pdf_path.stem
+
+        # 准备输出目录
+        if output_dir:
+            base_output_dir = Path(output_dir)
+        else:
+            base_output_dir = pdf_path.parent / "mineru_output"
+
+        base_output_dir.mkdir(parents=True, exist_ok=True)
+
+        try:
+            # 运行 MinerU 命令
+            self.logger.info(f"开始处理 PDF 文件: {pdf_path}")
+
+            self._run_mineru_command(
+                input_path=pdf_path,
+                output_dir=base_output_dir,
+                method=method,
+                lang=lang,
+                backend=backend,
+                **kwargs
+            )
+
+            # 读取生成的输出文件
+            backend_method = method
+            if backend.startswith("vlm-"):
+                backend_method = "vlm"
+
+            content_list, markdown_content = self._read_output_files(
+                base_output_dir, name_without_suffix, method=backend_method
+            )
+
+            # 统计处理结果
+            content_stats = {}
+            for item in content_list:
+                if isinstance(item, dict):
+                    content_type = item.get("type", "unknown")
+                    content_stats[content_type] = content_stats.get(content_type, 0) + 1
+
+            self.logger.info(f"PDF 处理完成! 提取了 {len(content_list)} 个内容块")
+            self.logger.info("内容类型统计:")
+            for content_type, count in content_stats.items():
+                self.logger.info(f"  - {content_type}: {count}")
+
+            return content_list, markdown_content
+
+        except Exception as e:
+            self.logger.error(f"处理 PDF 文件时出错: {str(e)}")
+            raise
+
+    def save_results(
+            self,
+            content_list: List[Dict[str, Any]],
+            markdown_content: str,
+            output_path: Union[str, Path],
+            save_markdown: bool = True,
+            save_json: bool = True,
+            indent: int = 2
+    ) -> Dict[str, Path]:
+        """
+        保存处理结果到文件
+
+        Args:
+            content_list: 内容列表
+            markdown_content: Markdown 内容
+            output_path: 输出路径（不含扩展名）
+            save_markdown: 是否保存 Markdown 文件
+            save_json: 是否保存 JSON 文件
+            indent: JSON 文件缩进
+
+        Returns:
+            Dict[str, Path]: 保存的文件路径字典
+        """
+        output_path = Path(output_path)
+        saved_files = {}
+
+        try:
+            # 确保输出目录存在
+            output_path.parent.mkdir(parents=True, exist_ok=True)
+
+            # 保存 Markdown 文件
+            if save_markdown and markdown_content:
+                md_path = output_path.with_suffix('.md')
+                with open(md_path, 'w', encoding='utf-8') as f:
+                    f.write(markdown_content)
+                saved_files['markdown'] = md_path
+                self.logger.info(f"Markdown 文件已保存: {md_path}")
+
+            # 保存 JSON 文件
+            if save_json and content_list:
+                json_path = output_path.with_suffix('.json')
+                with open(json_path, 'w', encoding='utf-8') as f:
+                    json.dump(content_list, f, indent=indent, ensure_ascii=False)
+                saved_files['json'] = json_path
+                self.logger.info(f"JSON 文件已保存: {json_path}")
+
+            return saved_files
+
+        except Exception as e:
+            self.logger.error(f"保存文件时出错: {e}")
+            raise
+
+
+def chunk_pdf_content(content_list: List[Dict[str, Any]], max_length: int = 4000) -> List[str]:
+    """
+    将MinerU解析的content_list分割成指定长度的文本块
+
+    Args:
+        content_list: MinerU解析的内容列表
+        max_length: 每个chunk的最大字符长度
+
+    Returns:
+        List[str]: 分块后的文本列表，每个文本都带有chunk标记
+    """
+
+    def extract_text(item):
+        """提取单个item的文本"""
+        if item.get("type") == "text":
+            text = item.get("text", "").strip()
+            if not text:
+                return ""
+            # 如果是标题，添加#标记
+            level = item.get("text_level", 0)
+            if level > 0:
+                return f"{'#' * min(level, 6)} {text}"
+            return text
+
+        elif item.get("type") == "table":
+            parts = []
+            if item.get("table_caption"):
+                parts.append("表格: " + " | ".join(item["table_caption"]))
+            if item.get("table_body"):
+                # 简单清理HTML标签
+                table_text = re.sub(r'<[^>]+>', ' | ', item["table_body"])
+                table_text = re.sub(r'\s+', ' ', table_text).strip()
+                parts.append(table_text)
+            return "\n".join(parts) if parts else ""
+
+        elif item.get("type") == "image":
+            if item.get("image_caption"):
+                return "图片: " + " | ".join(item["image_caption"])
+            return ""
+
+        return ""
+
+    # 提取所有文本
+    all_text = ""
+    for item in content_list:
+        text = extract_text(item)
+        if text.strip():
+            all_text += text + "\n"
+
+    if not all_text.strip():
+        return []
+
+    # 分割成chunks
+    chunks = []
+    current_chunk = ""
+
+    for line in all_text.split('\n'):
+        if len(current_chunk) + len(line) + 1 > max_length and current_chunk:
+            chunks.append(current_chunk.strip())
+            current_chunk = line
+        else:
+            current_chunk += line + "\n" if current_chunk else line
+
+    # 添加最后一个chunk
+    if current_chunk.strip():
+        chunks.append(current_chunk.strip())
+
+    # 添加标记
+    total_chunks = len(chunks)
+    marked_chunks = []
+    for i, chunk in enumerate(chunks):
+        header = f"=== CHUNK {i + 1}/{total_chunks} ({len(chunk)}字符) ===\n"
+        marked_chunks.append(header + chunk)
+
+    return marked_chunks
+
+
+def main():
+    """主函数 - 直接处理 PDF 文件"""
+
+    # 配置输入和输出路径
+    input_pdf_path = "/Users/dengjiaji/Downloads/bandaoti_research.pdf"  # 修改为你的 PDF 文件路径
+    output_dir = "/Users/dengjiaji/Downloads/bandaoti_research"  # 修改为你的输出目录
+
+    try:
+        # 创建处理器
+        processor = MinerUPDFProcessor(log_level="INFO")
+
+        # 处理 PDF 文件（使用默认参数）
+        print(f"开始处理 PDF: {input_pdf_path}")
+        content_list, markdown_content = processor.process_pdf(
+            pdf_path=input_pdf_path,
+            output_dir=output_dir,
+            method="auto",  # 自动选择最佳解析方法
+            backend="pipeline"  # 使用默认后端
+        )
+
+        # 保存结果到输出目录
+        # output_base = Path(output_dir) / Path(input_pdf_path).stem
+        # saved_files = processor.save_results(
+        #     content_list=content_list,
+        #     markdown_content=markdown_content,
+        #     output_path=output_base
+        # )
+
+        # 显示结果
+        print(f"\n✅ 处理完成!")
+        print(f"📄 提取内容块数量: {len(content_list)}")
+        print(f"📝 Markdown 内容长度: {len(markdown_content)} 字符")
+        print(f"\n💾 保存的文件:")
+        # for file_type, file_path in saved_files.items():
+        #     print(f"  {file_type}: {file_path}")
+
+        # 显示内容类型统计
+        content_stats = {}
+        for item in content_list:
+            if isinstance(item, dict):
+                content_type = item.get("type", "unknown")
+                content_stats[content_type] = content_stats.get(content_type, 0) + 1
+
+        print(f"\n📊 内容类型统计:")
+        for content_type, count in content_stats.items():
+            print(f"  {content_type}: {count}")
+
+        return content_list, markdown_content
+
+    except FileNotFoundError as e:
+        print(f"❌ 文件未找到: {e}")
+        print("请检查 input_pdf_path 是否正确")
+        return None, None
+    except Exception as e:
+        print(f"❌ 处理错误: {e}")
+        return None, None
+
+
+if __name__ == "__main__":
+    # main()
+    with open("/Users/dengjiaji/Downloads/bandaoti_research/bandaoti_research/auto/bandaoti_research_content_list.json", 'r', encoding='utf-8') as f:
+        content_list = json.load(f)
+
+    # 生成chunks
+    chunks = chunk_pdf_content(content_list, max_length=10000)
+    print("len(chunks)", len(chunks))