As bicycle sharing becomes increasingly popular，more college students are drawn to this new service, which is exerting a profound influence on college students' physical quality and health life style. This paper studies the characteristics and functions of bicycle sharing and analyzes its influence on college students' fitness awareness and motivation. Shared bicycles' conveniences for having a ride, for fitness training, and for social interactions all contribute to people's sense of freshness and creativity, enhancing college students' attachment to shared bicycles. The advices: to forge and build a campus platform for bicycle sharing service; to organize a bicycle riding club; colleges and bike sharing businesses cooperate to hold cycling events; colleges create the so-called "Beneficial Riding" Sports Festival.