The online car-calling platforms include Qi Travel, Didi Travel, Taxi, T3 Travel, etc. And platforms that are recognized by consumers in multi-services, such as Qi Travel and Didi Travel. Onlinecar-hailing, the abbreviation of online taxi booking service, refers to the business activities of building a service platform based on Internet technology, accessing qualified vehicles and drivers, and providing non-cruise taxi booking service by integrating supply and demand information. Online car booking is the Interim Measures for the Administration of Online Booking Taxi Service promulgated by China People's Republic of China, the Ministry of Transport and the Ministry of Public Security. It is defined as "the business activity of setting up a service platform, integrating supply and demand information, using qualified vehicles and drivers, and providing non-cruise taxi booking service".