From 1982 to 2018, the Wed of Science core collection database included 2999 pieces of literature information on children’s physical activity research, and data cleaning and visualization analysis was carried out by Citespace V software. The purpose is to study the international research in this field in China. The integration of the rail provides information support. The study found that: At present, the main force of foreign children’s physical activity research is concentrated in the developed countries such as the United States, Britain, Canada, Australia; research focuses on “overweight and obesity, exercise behavior intervention, meditation behavior, nutrition and so on”. The research evolution has gone through three stages: “exploring the foundation, expanding the extension, and comprehensively sublimating”; “in the ecosystem theory” The construction and evaluation of the nested structure model of children’s physical activity is the frontier of research. The study believes that the frontier of children’s physical activity research is “construction and evaluation of the nested structure model of children's physical activity in ecosystem theory.”