Because of its deep location, the hip joint is a pestle and mortar joint, in addition, there is a relatively rich soft tissue surrounding the hip, and the hip capsule is relatively less ductile, so the operation requirements for arthroscopy are high and often require special training, and at the same time, it often requires a certain understanding of open surgery of the hip joint. With the development of arthroscopic surgery technology with the improvement of diagnosis level, there are many specialists who selectively use arthroscopy for surgical treatment of traditional open treatment cases. At present, it is mainly applicable to hip free body, cartilage injury, joint glenoid lip injury, femoral acetabular impingement syndrome, hip osteoarthritis, hip synovial chondromatosis, rheumatoid arthritis, etc. The surgery is required to be completed under a special traction frame, and the joint cavity is punctured under fluoroscopic guidance. The hospital is also equipped with special hip arthroscopic instruments and positioning instruments to reduce the drawbacks of previous experience puncture and reduce the operating time and surgical trauma. At present, we can perform arthroscopic subacromial resection, chondroplasty, glenoid labral injury repair, free body removal, femoral acetabular impingement arthroplasty, etc. At the same time, due to the large number of conventional small incision hip replacement surgery experience, for some patients who cannot perform hip arthroscopy also adopt a minimally invasive approach to arthrocentesis, which greatly reduces the pain of patients, improves the surgical efficacy and delays the joint replacement surgery time as much as possible.