DevChat is a smart programming assistant integrated into multiple mainstream IDEs. It supports both domestic and foreign large models, providing precise context control and a simple, expandable prompt word directory. It can help developers solve problems such as technical solution design, unit testing, error information handling, code document writing, and code review, thereby improving team efficiency by 30%. DevChat also supports the Microsoft Azure platform, providing top-level global data privacy protection, and bearing the cost to promote healthy project development. Even beginners can benefit from it, utilizing the knowledge learned by large models for the entire team.