This system is an e-commerce platform, and it is an APP developed on the basis of Android. Android Studio and cloud service platform Bmob are used as tools to develop. When you read a good book, you can see others and see yourself, and you can get a lot of insights every time. Reading is a very popular thing to do. No matter how busy a job is, people will spend a certain amount of time buying books and reading books. The APP design page is beautiful, friendly user interface, high user experience, on the online bookstore APP, buyers and bookstore managers can achieve their own needs. Book purchasers can quickly buy their favorite books. Bookstore administrators can deal with orders formed after book buyers’ books in the first time and update books in bookstores in time. The development of such APP is of great significance for economic development, and much more convenient for consumers to use.