Abstract: As the platform economy has entered the public’s field of vision, platform companies have gradually entered a mature stage, forming an interconnected platform ecosystem with multiple business fields for development. A new type of competitive relationship based on“platform model and ecosystem”has emerged in the platform economy. Competition among enterprises in the traditional industrial era relies mainly on price and product quality, while competition among platform companies focuses on algorithms and data, leading to the emergence of new monopolistic behaviors in the market. Anti-monopoly is to maintain the socialist market economic order of fair competition, improve a Unified, open, competitive and orderly market system, stimulate the vitality of market players, and benefit the development of the entire society. Although China has made great improvements to anti-monopoly and revised the Anti-Monopoly Law, the governance mechanism of platform ecological monopoly still needs to be improved. Based on this, by analyzing the development status of platform economy, sorting out the platform’s ecological monopoly behavior and its regulatory dilemma, constructing a multi-governance model with government leadership, social participation, and enterprise practice, giving full play to the synergistic effect of multiple subjects in anti-monopoly, and improving the platform’s ecological monopoly, thereby promoting the innovative development and fair competition of the platform economy.

Key words: platform economy, platform ecological monopoly, Anti-monopoly, platform governance