Recently, each platform is expanding the programming of entertainment programs, which are the core of the format industry and increase viewer ratings, but while the diversity of materials and performers has increased, the diversity of formats has decreased. After 2000, entertainment programs, centering on star MCs, have repeatedly produced programs of similar formats that can make use of their characteristics and strengths, leading to stagnation and regression in format diversifi cation. In the process of analyzing this phenomenon, this study paid attention to the fact that the leadership and characteristics of the main MC of an entertainment program have a great influence on other performers and programs, in particular, have a deep correlation with the composition and change of the program format. Therefore, by analyzing the leadership of the main MC and exploring the correlation between it and the program format, it is expected to serve as a cornerstone for related research and serve as an opportunity to change the fixed and repetitive format.