With the continuous development of popular music, it has become an important part of social and cultural life. Many colleges and universities at home and abroad have carried out talent training for popular music related majors. Academia and industry have also done a lot of research work on popular music related issues. Because of the times, it is imperative to put forward and establish popular musicology. This paper discusses the setting of popular musicology and related issues from three aspects: the background and reasons of popular musicology, the institutional basis for the setting of popular musicology, and the theoretical proof of the setting of popular musicology. In addition, some orientations of the subordinates of popular musicology are put forward.