Using modern educational technology to carry out teaching and research activities through mobile Internet media is an innovation of the working mode of teachers and an attempt and exploration of new technologies, new platforms and new models in the field of education. WeChat public platform has rich information resources and diverse sharing services. WeChat's acquaintance circle communication effect and convenient communication and sharing characteristics provide an excellent interpersonal communication atmosphere for the academic community, which can promote the exchange and communication between teachers and students in the region. The WeChat public platform creates a collaborative, relaxed and equal working atmosphere, which optimizes the teaching activities of teachers and students. The idea of designing and developing the teaching management of WeChat public number is put forward, and an interactive mobile assistant platform is constructed to change the traditional teaching and management mode of colleges.