Abstract: Digital economy， as an important support and platform to promote high-quality growth of China's economy， has provided an important boost to deepen the comprehensive reform of the market economy system and mechanism. The in-depth development of digital economy is reflected in the marketization and dynamic competition of the data of the ecological industrial chain of “artificial intelligence， blockchain， cloud computing， and big data”， which has brought impact to the current market supervision system. Focusing on the operation of the digital economy and ecological industrial chain on basis of the collection， storage， organization and analysis of the raw data， the development， application， opening and sharing of the data， and the analysis of the appropriateness and legitimacy of different links in data-related activities， the paper advocates that the key points of current and future market regulatory reforms should be to continuously promote marketization and law-based regulation， introduce technology regulation， emphasize the integration of technology regulation and law-based regulation and move from market regulation to market governance.

Key words: digital economy, data-related activities, market regulation, law-based regulation, technology regulation