Abstract: During the novel coronavirus pneumonia, all over the country carried out online teaching in universities. After practice research, it is found that most computer courses are practical and relevant technology development is rapid, which is very suitable for online teaching. After the epidemic, the online and offline hybrid teaching mode is more conducive to the cultivation of students' logical thinking ability, self-learning ability and team cooperation ability. Taking computer courses as an example, this paper analyzes the current online and offline teaching mode, and summarizes the practical research on the online and offline mixed teaching mode through the preparation of materials on the front line, the classroom teaching and interaction on the middle line and offline, and the students' offline autonomous learning after class, so as to provide reference for the reform of the online + offline mixed teaching mode.

Key words: University, Computer, Online teaching, Blended teaching