Abstract: To understand the pathogenesis of flatfoot and provide reference for improved treatment options. This paper reviewed the causes and treatment of PubMed, Web of Science, CNKI and Wanfang. The reasons for the formation of flat feet include congenital factors and acquired factors, while the treatment methods mainly include orthopedic insoles, physical therapy, surgical therapy and exercise therapy. These methods are able to correct foot structural abnormalities, optimize biomechanical properties and improve foot stability and range of motion. For future research will use advanced imaging and simulation technology for accurate assessment, new materials and the application of non-surgical therapy will be able to relieve long-term symptoms, and genetic research will promote the development of early diagnosis and personalized treatment, the use of intelligent orthosis will realize real-time monitoring and dynamic adjustment, to provide more flat foot assessment, intervention and treatment of more effective methods and means.