Abstract: With the maturity of modern information technology and the advent of the “Internet plus” era, the rapid rise of sharing economy enterprises and the construction of their competitive advantages in a short time have greatly impacted traditional enterprises. Combining with the theory of sharing economy and competitive advantage,and based on the theory of disruptive innovation, this paper takes three typical sharing economic enterprises as examples and puts forward the mechanism and path of sharing economy enterprises to build competitive advantage by subverting and eroding different markets of traditional enterprises. It is believed that sharing economy enterprises can build cost advantage by eroding low-end markets, build integration advantage by eroding peripheral market, and build differentiation advantage by eroding independent market. These conclusions provide useful references and lessons for sharing economy enterprises to subvert and erode traditional markets through disruptive product innovation, disruptive technology innovation and disruptive business model innovation, and thus to build their competitive advantages..

Key words: sharing economy, competitive advantage, disruptive innovation, market erosion