No matter what kind of technology, teachers and students should always be the main body, the application of information technology is only an auxiliary means. By the way of micro-lesson, the knowledge of a lesson is presented in fragments, and the communication of the application of Wechat can make the teaching activities better cooperation among the various roles and expand the students'learning vision. Wechat public platform is a tool that takes course users and learning resources as the main body to help and guide students to better adapt to the era of fragmented learning.