Abstract: Social links have the function of translating macro social goals into individual drive and action. Based on the data of tennis, the influence mechanism and action path between social links and sports participation behavior intentions are explored from the perspective of "social links", taking social capital theory, planning behavior theory and self-efficacy theory as the theoretical basis. Empirical results show that: Collective social capital from the perspective of social links has a significantly direct positive impact on people's motivation to participate in sports, that is, accumulating collective social capital helps to improve people's motivation for sports participation; Sports participation motivation is an important mediating variable of social links influencing people's intention to participate in sports; Perception of athletic ability plays a positive role in the influence of social links on the intention of sports participation behavior.