The purpose of this study is to analyze the participation motivation of island cyclists, the characteristics of serious leisure, and leisure benefits. In this study, the riders around Pingtan Island were survey by convenient sampling, and 330 effective questionnaires were obtained. After statistics analysis, the results show that: The results show that: 1.Different personal background variables do not affect the participation motivation of riders, but had partial effect on serious leisure and benefits. 2. The participation motivation of cyclists have an effect on leisure benefits. 3. "Unique spirit" and "strong sense of identity" of cyclists' participation in cycling activities has an effect on their perceived leisure benefits. According to the above results, this study puts forward relevant suggestions for the management and future researchers.