Adolescent hip dysplasia is one of the most common causes of pain secondary to osteoarthritis of the adult hip, and young patients who fail to receive appropriate treatment can eventually progress to severe hip osteoarthritis. How can dysplastic acetabulum be treated? There are two methods commonly used in the medical community: acetabular osteotomy and artificial joint replacement. Acetabular osteotomy and artificial joint are not substitutes for each other, but are suitable for different patients. Acetabular osteotomy is suitable for young patients over 12 years of age or older with acetabular dysplasia. Acetabular osteotomy does not destroy the integrity of the pelvic ring, and there is no major change in the physiological structure, which does not affect the pregnancy and delivery process. The joint is still its own joint, which is more in line with its own biomechanical characteristics. If the first osteotomy in childhood fails, the patient can be saved by a second acetabular osteotomy. If the disease continues to develop and deteriorate in adulthood, another artificial joint replacement is also possible. If the gap between the cartilage is severely narrowed and the articular cartilage is so worn that it is difficult to repair, an artificial joint replacement can be considered to re-establish the acetabulum to accommodate the femoral head again. Artificial joints have a certain life span and there are problems with joint wear and tear and possibly two or more artificial joint replacements. Post-operative artificial joints require avoidance of many forms of activity after surgery, causing injury and inconvenience to work and life, so young people are not well suited for artificial joint replacement.