Fitness has become one of the most popular projects of many people in modern times, and people are willing to spend time and money on fitness. Physical fitness can not only develop good living habits it can also be used as an active leisure way to enrich entertainment and cultural activities. This article takes college student behavior as the object to carry out research on promoting the development of fitness economy. College students are the mainstay and important consumer group in the society, and it is of great significance to study their fitness consumption status and attitudes. Smart-PLS 3.0 is used as the main statistics analyzing tool. The results indicate that self-demand, social influence, facilitating conditions, performance expectancy and effort expectancy are drivers for young people to adopt fitness.