Necrosis of the femoral head is generally difficult to cure on its own if not given proper management and treatment. Only early treatment can cure necrosis of the femoral head. 1. The law of self-healing under the effect of external intervention is generally dead bone formation, forming a sclerotic band, and then absorbing the new bone crawling to replace it. However, the formation of new bone is generally faster than necrosis, especially in the articular cartilage below the new bone creeping replacement is difficult. Most of the necrosis of the femoral head starts with the collapse of the bone below the cartilage, and gradually the necrosis increases and the symptoms worsen. Therefore, when necrosis of the femoral head is found, it needs to be treated at an early stage, so that it can be cured. 2. Although the cause and degree of ischemic necrosis of the femoral head are different, the basic pathological change is the obstruction of blood circulation in the femoral head, which leads to bone necrosis and the subsequent repair reaction. Necrosis and repair are not separate but intertwined, and the repair reaction starts after two weeks of ischemia. 3. From the area of undamaged circulation, i.e., the vascularization of the round ligament and the supply of the inferior epiphyseal artery, vascular fibrous tissue grows into the necrotic area, necrotic bone fragments are removed, and new bone is attached to the necrotic trabeculae, which are then progressively resorbed and removed. After that, the necrotic bone is gradually absorbed and removed. The new bone becomes living bone instead of new bone, completes the process of creeping substitution, and after a long period of time, it becomes mature trabeculae, and the repair and healing is completed. It is recommended that when the femoral head necrosis, timely consultation, under the guidance of the doctor standardized treatment.