Abstract: During the normalization of novel coronavirus pneumonia period of epidemic prevention and control, in order to do a good job in epidemic prevention and control and classroom teaching at the same time, the school actively responded to the call of the Ministry of Education, and actively explored an efficient online teaching mode through online live broadcast of some courses on the platform, so as to provide teaching content for students who failed to return to school at home in time and complete the course requirements as planned. After the students return to school, they will continue to learn the follow-up courses offline according to the original curriculum arrangement. Taking the course of mechanical engineering materials as an example, this paper discusses the teaching mode of "online and offline matching" of the course, and provides an example for the subsequent teaching of mechanical engineering materials.

Key words: Engineering materials, Online teaching schema, Offline teaching schema, Mechanical engineering