diff --git a/src/landppt/services/research/enhanced_report_generator.py b/src/landppt/services/research/enhanced_report_generator.py
new file mode 100644
index 0000000..9aa6e95
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+++ b/src/landppt/services/research/enhanced_report_generator.py
@@ -0,0 +1,267 @@
+"""
+Enhanced Report Generator for Comprehensive Research Reports
+
+This module provides flexible, detailed report generation without rigid module divisions,
+focusing on comprehensive content analysis and professional presentation.
+"""
+
+import logging
+import re
+from datetime import datetime
+from pathlib import Path
+from typing import Dict, List, Optional, Any
+from .enhanced_research_service import EnhancedResearchReport, EnhancedResearchStep
+
+logger = logging.getLogger(__name__)
+
+
+class EnhancedReportGenerator:
+    """Generate comprehensive, flexible research reports"""
+    
+    def __init__(self, reports_dir: str = "research_reports"):
+        self.reports_dir = Path(reports_dir)
+        self.reports_dir.mkdir(exist_ok=True)
+        logger.info(f"Enhanced research reports directory: {self.reports_dir.absolute()}")
+    
+    def generate_markdown_report(self, report: EnhancedResearchReport) -> str:
+        """Generate comprehensive Markdown formatted research report"""
+        
+        # Build comprehensive report content
+        markdown_content = self._build_enhanced_markdown_content(report)
+        return markdown_content
+    
+    def save_report_to_file(self, report: EnhancedResearchReport, 
+                          custom_filename: Optional[str] = None) -> str:
+        """Save enhanced research report to file"""
+        
+        try:
+            # Generate filename
+            if custom_filename:
+                filename = custom_filename
+                if not filename.endswith('.md'):
+                    filename += '.md'
+            else:
+                safe_topic = self._sanitize_filename(report.topic)
+                timestamp = report.created_at.strftime("%Y%m%d_%H%M%S")
+                filename = f"enhanced_research_{safe_topic}_{timestamp}.md"
+            
+            # Generate full path
+            file_path = self.reports_dir / filename
+            
+            # Generate markdown content
+            markdown_content = self._build_enhanced_markdown_content(report)
+            
+            # Write to file
+            with open(file_path, 'w', encoding='utf-8') as f:
+                f.write(markdown_content)
+            
+            logger.info(f"Enhanced research report saved to: {file_path.absolute()}")
+            return str(file_path.absolute())
+            
+        except Exception as e:
+            logger.error(f"Failed to save enhanced research report: {e}")
+            raise
+    
+    def _build_enhanced_markdown_content(self, report: EnhancedResearchReport) -> str:
+        """Build comprehensive markdown content without rigid divisions"""
+        
+        content = []
+        
+        # Header with metadata
+        content.append(f"# 深度研究报告：{report.topic}")
+        content.append("")
+        content.append("---")
+        content.append("")
+        
+        # Report metadata
+        content.append("## 📊 报告信息")
+        content.append("")
+        content.append(f"- **研究主题**: {report.topic}")
+        content.append(f"- **报告语言**: {report.language}")
+        content.append(f"- **生成时间**: {report.created_at.strftime('%Y年%m月%d日 %H:%M:%S')}")
+        content.append(f"- **研究时长**: {report.total_duration:.2f} 秒")
+        content.append(f"- **研究步骤**: {len(report.steps)} 个")
+        content.append(f"- **信息来源**: {len(report.sources)} 个")
+        content.append("")
+        
+        # Provider statistics
+        if report.provider_stats:
+            content.append("### 🔍 数据来源统计")
+            content.append("")
+            for provider, count in report.provider_stats.items():
+                if count > 0:
+                    provider_name = {
+                        'tavily': 'Tavily 搜索',
+                        'searxng': 'SearXNG 搜索', 
+                        'content_extraction': '深度内容提取'
+                    }.get(provider, provider)
+                    content.append(f"- **{provider_name}**: {count} 次")
+            content.append("")
+        
+        # Content analysis overview
+        if report.content_analysis:
+            stats = report.content_analysis.get('content_stats', {})
+            if stats:
+                content.append("### 📈 内容分析概览")
+                content.append("")
+                if stats.get('total_words', 0) > 0:
+                    content.append(f"- **提取文字总数**: {stats['total_words']:,} 字")
+                if stats.get('tavily_results', 0) > 0:
+                    content.append(f"- **Tavily 搜索结果**: {stats['tavily_results']} 条")
+                if stats.get('searxng_results', 0) > 0:
+                    content.append(f"- **SearXNG 搜索结果**: {stats['searxng_results']} 条")
+                if stats.get('extracted_pages', 0) > 0:
+                    content.append(f"- **深度提取页面**: {stats['extracted_pages']} 个")
+                
+                quality = report.content_analysis.get('analysis_quality', 'basic')
+                quality_text = {'high': '高质量', 'medium': '中等质量', 'basic': '基础质量'}.get(quality, quality)
+                content.append(f"- **分析质量**: {quality_text}")
+                content.append("")
+        
+        # Executive Summary
+        content.append("## 📋 执行摘要")
+        content.append("")
+        content.append(report.executive_summary)
+        content.append("")
+        
+        # Comprehensive Analysis (if available)
+        if report.content_analysis and report.content_analysis.get('comprehensive_analysis'):
+            content.append("## 🔬 综合分析")
+            content.append("")
+            content.append(report.content_analysis['comprehensive_analysis'])
+            content.append("")
+        
+        # Key Findings
+        if report.key_findings:
+            content.append("## 🔍 关键发现")
+            content.append("")
+            for i, finding in enumerate(report.key_findings, 1):
+                content.append(f"### {i}. {finding}")
+                content.append("")
+        
+        # Detailed Research Steps
+        content.append("## 📚 详细研究过程")
+        content.append("")
+        
+        for step in report.steps:
+            content.append(f"### 步骤 {step.step_number}: {step.description}")
+            content.append("")
+            content.append(f"**搜索查询**: `{step.query}`")
+            content.append(f"**执行时间**: {step.duration:.2f} 秒")
+            content.append("")
+            
+            # Data sources for this step
+            sources_info = []
+            if step.tavily_results:
+                sources_info.append(f"Tavily: {len(step.tavily_results)} 条结果")
+            if step.searxng_results:
+                sources_info.append(f"SearXNG: {len(step.searxng_results.results)} 条结果")
+            if step.extracted_content:
+                sources_info.append(f"深度提取: {len(step.extracted_content)} 个页面")
+            
+            if sources_info:
+                content.append(f"**数据来源**: {' | '.join(sources_info)}")
+                content.append("")
+            
+            # Step analysis
+            if step.analysis:
+                content.append("#### 分析结果")
+                content.append("")
+                content.append(step.analysis)
+                content.append("")
+            
+            # Detailed results (collapsible sections)
+            if step.tavily_results or step.searxng_results or step.extracted_content:
+                content.append("<details>")
+                content.append("<summary>📊 详细搜索结果</summary>")
+                content.append("")
+                
+                # Tavily results
+                if step.tavily_results:
+                    content.append("**Tavily 搜索结果:**")
+                    content.append("")
+                    for i, result in enumerate(step.tavily_results[:5], 1):
+                        content.append(f"{i}. [{result.get('title', 'No title')}]({result.get('url', '#')})")
+                        if result.get('content'):
+                            content.append(f"   > {result['content'][:200]}...")
+                        content.append("")
+                
+                # SearXNG results
+                if step.searxng_results:
+                    content.append("**SearXNG 搜索结果:**")
+                    content.append("")
+                    for i, result in enumerate(step.searxng_results.results[:5], 1):
+                        content.append(f"{i}. [{result.title}]({result.url})")
+                        if result.content:
+                            content.append(f"   > {result.content[:200]}...")
+                        content.append("")
+                
+                # Extracted content
+                if step.extracted_content:
+                    content.append("**深度内容提取:**")
+                    content.append("")
+                    for i, extracted in enumerate(step.extracted_content[:3], 1):
+                        content.append(f"{i}. [{extracted.title}]({extracted.url}) ({extracted.word_count} 字)")
+                        if extracted.content:
+                            content.append(f"   > {extracted.content[:300]}...")
+                        content.append("")
+                
+                content.append("</details>")
+                content.append("")
+        
+        # Recommendations
+        if report.recommendations:
+            content.append("## 💡 建议与推荐")
+            content.append("")
+            for i, recommendation in enumerate(report.recommendations, 1):
+                content.append(f"### {i}. {recommendation}")
+                content.append("")
+        
+        # Sources
+        if report.sources:
+            content.append("## 📖 参考来源")
+            content.append("")
+            for i, source in enumerate(report.sources, 1):
+                content.append(f"{i}. {source}")
+            content.append("")
+        
+        # Footer
+        content.append("---")
+        content.append("")
+        content.append("*本报告由 LandPPT 增强研究系统生成*")
+        content.append("")
+        content.append(f"**生成时间**: {datetime.now().strftime('%Y年%m月%d日 %H:%M:%S')}")
+        
+        return "\n".join(content)
+    
+    def _sanitize_filename(self, filename: str) -> str:
+        """Sanitize filename for safe file system usage"""
+        # Remove or replace invalid characters
+        filename = re.sub(r'[<>:"/\\|?*]', '_', filename)
+        # Remove extra spaces and limit length
+        filename = re.sub(r'\s+', '_', filename.strip())
+        return filename[:50] if len(filename) > 50 else filename
+    
+    def list_reports(self) -> List[Dict[str, Any]]:
+        """List all saved research reports"""
+        reports = []
+        
+        try:
+            for file_path in self.reports_dir.glob("*.md"):
+                if file_path.is_file():
+                    stat = file_path.stat()
+                    reports.append({
+                        'filename': file_path.name,
+                        'path': str(file_path.absolute()),
+                        'size': stat.st_size,
+                        'created': datetime.fromtimestamp(stat.st_ctime),
+                        'modified': datetime.fromtimestamp(stat.st_mtime)
+                    })
+            
+            # Sort by modification time (newest first)
+            reports.sort(key=lambda x: x['modified'], reverse=True)
+            
+        except Exception as e:
+            logger.error(f"Failed to list reports: {e}")
+        
+        return reports