Abstract:With the development of short video media and the change of popular entertainment mode, short video occupies an indispensable position in the field of music promotion. The unique video form of vertical screen provides a lot of new ways for commercial realization, and makes the competition of commercial products fiercer, so the demand for visual design of vertical screen video has become increasingly prominent. The work aims to take Tik Tok, a music short video platform, as the example to analyze and interpret the activities and value of music visualization communication, find out the specific elements of music visualization, and redesign the short video. Through the analysis on the rapid development of vertical screen video and the information demands and usage habits of mobile phone users, the discussion is carried out from the concept characteristics, advantages, design elements and communication aesthetics of music visualization to combine music aesthetics with visual expression of short video visual to show the pluralistic artistic expression of “audiovisual combination”, thus studying the relationship and transformation between auditory and visual language. It is found that we-media has driven the rise of electronic media workers. Based on the basic concept of electronic media workers, it is recognized that electronic media workers are the main body of communication in this media society, and further understood that the we-media attribute of “everyone is the creator” brought by short video APP based on “Tik Tok” has promoted the music visualization development of short video APP such as “Tik Tok” to a certain extent.