Sharing Economy has been experiencing great development and convergence with tourism these years,which cannot be ignored.How Sharing Economy can maintain its vigorous development in tourism without generating negative influence is worth studying.On the basis of discussions on the essential attributes and features of Sharing Economy,the development of Sha-ring Economy in tourism and the reasons for it to adapt to and develop rapidly in tourism,This paper aims to probe into the influence of Sharing Economy on different sub sectors in tourism from suppliers,demanders,intermediary agents and tourist destinations.The research finds that Sharing Economy has influence on the above-mentioned four aspects in different degree due to the different relevance of the sub sectors with tourism and their positions.This paper proposes meas-ures and policies for tourist sectors and sharing economy platforms to adapt to the changes brought about by the fast development of Sharing Economy in tourism.