This study conducts an empirical analysis on the key factors in promoting collaborative consumption, the main consumption pattern, actually participating in consumption behavior in the brand-new sharing economy. Based on prior research, the key factors to promote collaborative consumption are selected as individual benefit, social benefit and social influence. Perceived usefulness is a medium used to analyze the actual participation process of collaborative consumption by structural equation model. The analysis results showed that individual benefit, social benefit and social influence have positive (+) influence on the participation of collaborative consumption through media perceived usefulness. In particular, individual benefit is the most important influencing factor, and the awareness of environmental protection should be continuously promoted in social benefit. At last, based on the analysis results, the revelatory and policy proposals were put forward.