Sharing economy, high-speed rail, mobile payments and online shopping are known as China's "new major four inventions". In 2017, sharing economy once enjoyed its height is in decline. In the past year, sharing economy has experienced roller-coaster ups and downs in China. At least 19 enterprises joining sharing economy have declared bankruptcy or termination of service, including seven bike-sharing, two car-sharing, seven charger-sharing enterprises. Due to the lack of profit model and vicious competition, the sharing economy bubble is emerging.