Objective To know the current progress in the treatment of osteoarthritis, learn the methods which can be used for reference, and find out its shortcomings through a retrospective analysis of the current diagnosis and treatment of knee osteoarthritisat at home and abroad. Methods Sorting, screening and retrospective study were made through wide reading of a large number of domestic and foreign literature in recent years. Results Currently, the diagnostic methods of knee osteoarthritis at home and abroad have been gradually improved from clinical symptoms, imaging to pathology. Conclusion How t...