Abstract: The sudden COVID-19 broke the traditional teaching mode, and the majority of teachers accurately changed and scientifically responded. The online teaching mode was fully opened up by using the network platform ensured the proper teaching order, played an important role in maintaining social stability andpromoted the teaching skills and level of the majority of teachers in using modern media and new technology. In the post epidemic era, the majority of ideological and political teachers should take the initiative to seek change, take the epidemic as an opportunity to actively promote the teaching reform of ideological and political course, and realize the deep integration of “big class” and ideological and political small class in epidemic society. Carrying out blended teaching as teaching method, applying the advantages of online teaching mode to the normalization teaching , realizing the complementary advantages of online and offline, and improving the teaching content by effectively integrating the antiepidemic stories into the ideological and political teaching will enhance the political belief of college students, and effectively enhance the timeliness and appeal of the main channel role of ideological and political education.

Key words: epidemic situation, big social class, integration, ideological and political course, blended teaching, political belief