In recent years

education and learning in China’s colleges and universities have begun to gradually attach importance to education informatization

and online education resources have gradually increased. Modern education technology is the product of the development of modern science and technology and modern education theory to a certain stage. It combines learning process and learning resources to change teaching mode and teaching methods. At the same time

music educators are also actively discussing how to use information education technology to enrich the classroom teaching mode. This paper explores how to use online teaching mode to teach music theory courses in colleges and universities

and reflects on the problems of traditional teaching methods. In order to explore the teaching mode and limitations of online music theory courses

this paper deeply explores how to carry out music teaching combining online and offline music theory courses in colleges and universities.