In order to meet the online teaching requirements during the COVID-19 epidemic and ensure the implementation of university physics teaching，the online teaching mode is explored in the beginning of this semester. After investigating the characteristics of online teaching on different teaching platforms，it was decided to use Dingding and Rain Classroom as the main teaching software，and the network teaching platform as the teaching resource uploading platform to ensure that students have online resources. Rain Classroom is taken as the unit test and classroom test platform because of its function of data recording and analysis. Through implementing the whole process of the teaching mode of pre - class preparation，live discussion and learning in class，and after - class review，not only the online teaching is effectively carried out，but also the student’s learning data is collected to master the student’s learning situation and provide guarantee for online teaching of university physics.