In recent years, the campus network speed is too slow, affecting the efficiency of students' selection of courses. At the same time, the performance of Internet cafes is gradually declining. In order to achieve a win-win situation for Internet cafes and students, it is imperative to develop an Internet cafe online selection system. This article is based on the Android development platform, using the Java programming language to develop the Internet cafe online selection APP, while using MySQL to provide powerful back-end database support.