In recent years

the sudden outbreak of COVID-19 has brought a serious impact on education and teaching. At the same time

it also seriously affects college physics teaching. In this paper

the online-offline mixed teaching mode of college physics is constructed from the traditional teaching mode for analysis. At the same time

the combination of physical offline teaching resources and physical online teaching resources

physical offline classroom face-to-face teaching and physical offline learning

physical offline classroom teacher-student interaction and physical online classroom asynchronous interaction are combined. In this way

the online-offline mixed teaching mode of college physics can fully connect the whole semester's study

thus forming a complete and closed learning process.