本文以阿里旗下知名二手交易APP“闲鱼”中的“兴趣鱼塘”为例,结合相关理论基础,对用户参与社区化分享经济的动因进行实证研究。得出经济利益、环保与节俭意识、社交利益、社区管理以及安全风险为影响用户参与行为的五大动因。研究目的是希望对分享经济平台的创新方向给予一定的启迪作用。 In this paper, we take the “fish pond of interest” in the well-known second-hand transaction APP “Leisure Fish ” of Ali as an example to make an empirical study on the motivation of users participating in the community-based sharing economy based on the relevant theoretical foundation. Draw five major reasons for economic participation, environmental protection and thrifty awareness, social benefits, community management and security risks as users. The purpose of the study is to give some enlightenment on the innovation direction of sharing economic platform.