This article is mainly to sort out and review the field of online health care, explore the current research status of the field of online health care, reveal the research hotspots and research frontiers in this field, and provide references for other related research in the field of online health care, mainly through the following way: use citespace to visually analyze the data obtained from Web of Science. The following conclusions are drawn: The United States has strong scientific research capabilities in the field of online health care; according to citation clustering, it can be grouped into 8 research categories, and there are 8 key node documents; research hotspots can be divided into three stages, and the research front will center on knowledge, expand with quality. Starting from the Internet, online health communities, health information management, and online health education are currently research hot topics. Quality assessment and knowledge management around the above topics will be the future development direction of the online health carse field.