Public health service is an inherent requirement to promote comprehensive development and is a standard for economic and social development. The Chinese Office of the State Office announced the "proposal to promote the sustainable development of the Internet technology medical health" "medical health application of Internet technology is beneficial to the intelligent management capabilities of medical and health care, enhance resource allocation, independent innovation services, reduce service efficiency, reduce the cost of service fees, to meet the growing number of the general public medical and health requirements. In the new socialist era, medical and health care has become the most important concern for social development and people, and "health for all" has become a strategy. In China's medical system reform for more than 40 years, the introduction of big data technology has also brought new changes to the medical field, which is expected to deal with the problem of "difficult and expensive medical care" and improve the allocation of medical resources, and the development of information technology is the trend of the whole industry. The paper focuses on the development of public health management methods and challenges within the framework of "Internet technology".