In clinical practice, joint ultrasonography is an examination method that mainly uses ultrasound to observe the joints of patients. Currently, joint ultrasound is mainly used in clinical practice for the diagnosis of rheumatoid arthritis, gouty arthritis, ankylosing arthritis and other rheumatic immune diseases, as well as bone diseases and congenital hip dislocation. Joint ultrasonography has the advantages of repeatable operation, low price, and the ability to detect early problems of lesions, but it needs to be combined with magnetic resonance examination to clarify the disease.