In the era of artificial intelligence and large models, large language models (LLM) have become an indispensable tool, providing powerful support for various real-life application scenarios. From simple text classification to complex logical inference and code generation, LLM is changing the way we deal with problems. LLM can do much more than simple chat conversations like ChatGPT, and people are constantly exploring the potential of LLM. How to apply LLM to complex application scenarios and how to build an application based on LLM have become increasingly important skills. This project will focus on LLM applications and provide students with practical LLM project experience through a large number of practical tasks.