Abstract: Online medical is the new application of the Internet in the classical medical industry, the study of this area attracts wide attention of management academic fields. This paper uses the data of online medical literature included in Web of Science to do visual analysis of knowledge graph and reviews all the literatures. The results show that the British, Americans and Australians have strong research capabilities in the field; the early research basis of this field is psychology; in addition, the number of studies in this field is increasing, but the research subjects are still relatively scattered. Early research subjects mainly focus on online health information. The research of online medical community and the application of random experiment will continue to be concerned in the future.

Key words: Online medical, 　Knowledge graph, 　Visualization, 　Online health community, 　CiteSpace