Flutter is a mobile application development framework introduced by Google and open source, focusing on cross-platform, high-fidelity, high-performance. Currently Flutter already supports iOS, Android, Web, Windows, macOS, Linux and other platforms. Around the world, Flutter is being used by more and more developers and organizations. Wuhan GDG will conduct Flutter Festival Wuhan on March 23, 2022 to promote and introduce Flutter and make more choices in mobile application environment.