In recent years, due to the impact of the covid epidemic, international tourism activities have been greatly restricted, so we hope to promote domestic tourism, so we developed this Travel Taiwan APP. We apply GPS positioning to the development of the APP. This APP allows tour guides to know the location and personal information of group guests at any time. The purpose is to solve the problem that someone gets lost when the tour group goes out, but they can't find the person all the time, so that the tour guide can know the lost location in real time. Through this Travel Taiwan APP, you can avoid accidents when you go out to play, and let you play happily and safely.