Abstract: The new format of platform economy and its characteristics of ecosystem, openness and sharing inevitably call for innovative governance mode of platform economy. At present, the healthy development of platform economy has been included in the policy agenda of the central government in China. The nature of platform economy determines that co-governance of stakeholders inside and outside the platform is the basic way of governance and the fundamental way to regulate healthy development. From the perspective of governance mechanism design, this paper considers the incentive compatible platform rules and the transaction cost of cooperative governance, constructs the framework of platform economy cooperative governance, and puts forward the ideas and countermeasures of platform economy cooperative governance.

Key words: platform economy, decentralized supervision, cooperative governance, platform risk