Aiming at the problems of low computing power and limited storage capacity of mobile terminals, a lightweight identity authentication protocol suitable for mobile edge computing environment is proposed. This protocol combines cryptography with the security protection technology of the physical layer. The system is a web software system based on the Internet network, which provides both teachers and students with the necessary network teaching environment and related tools for online teaching. To integrate the text, graphics, voice and video document systems required for the course, relying on Yu Classroom, Xuetangyun, Chuangao APP, WeChat group and other platforms to create "theoretical learning + live teaching + MOOC video + online Q&A" four the integrated teaching mode has achieved teachers' teaching, students' independent learning and multi-channel interaction between teachers and students.