RAG Web UI is an intelligent dialogue system based on RAG technology that combines document retrieval with large language models to provide intelligent question-and-answer services based on knowledge bases for enterprises and individuals. The system employs a decoupled architecture, supporting smart management of various document formats (such as PDF, DOCX, Markdown, Text), including automatic chunking and vectorization. Its dialogue engine supports multi-turn dialogue and citation references, delivering accurate knowledge retrieval and generation services. The system also allows flexible switching between high-performance vector databases (such as ChromaDB and Qdrant), ensuring good scalability and performance optimization. As an open-source project, it offers developers a wealth of technical implementations and application scenarios, making it suitable for building enterprise-class knowledge management systems or intelligent customer service platforms.