With the consistently development of the Internet，the idol-centered fan economy has driven the development and revolution of netcasting industry，and became an indispensable part of culture industry. Different from in the era of tradition media，fans take the initiative to participate in the formation of an idol in the digital media era. This fan labor has brought new opportunities and challenges to the netcasting industry. While the evolution of fan culture drives the development of netcasting industry，it causes the problem like difficulty to manage and resource dilution. This report introduced how fan culture changed along with the development of media technologies，and how this evolution driven the development of culture industry. Meanwhile，the report provided analyses about the psychological predictors of fan labors. Finally，it revealed the risks and future trends of idol industry.