David S. Evans (2003) took the lead in introducing the bilateral market theory into the antitrust research field of the Internet platform and established the analysis framework of platform antitrust. In the Antitrust Economics of Multi-Sided Platform Markets, Evans pointed out that the bilateral market is a typical feature of network platform enterprises. In industries with bilateral market characteristics, theories, and methods such as price competition theory and multi-product pricing theory under the traditional unilateral market research framework are used; it has become more and more challenging to analyse the market competition behaviours in this kind of network platform industry, such as pricing, exclusive trading, user aggregation and so on (David S Evans, 2003). Therefore, the sector needs to establish a new theoretical framework of Internet platform monopoly legal regulation based on bilateral market theory.