With the development of information techonology, the relationship between people become closer. People use the properties and merits of internet to build a more efficient community. The platforms emerge and change human life and business models. We charge temporary group to build swift trust between people instead of traditional way. Researcher chooses to study the case of Airbnb. During the last years, The sharing economy rise and the development of innovation through platform. This study try to find how this type of enterprise build trust mechanism,and make user willing to share resources with the others.