Femoral head necrosis is one of the common diseases in orthopaedic clinics, and it occurs in young and middle-aged people. The causes of femoral head necrosis are traumatic and non-traumatic factors, the former includes the use of high doses of hormones and alcohol abuse, while the latter is mainly femoral neck fracture. Although the pathology is not completely consistent, the basic process of the disease is necrosis of bone tissue and the subsequent repair response, and eventually the collapse of the femoral head and the appearance of arthritis. There are many treatment options for femoral head necrosis, including preservation of the femoral head and total replacement. The former includes pulsed electrical stimulation therapy, hyperbaric oxygen therapy, medullary core decompression, bone flap grafting with or without vascular tip, osteotomy, etc. However, the long-term results are not certain, and the final result is that more than 95% of people have to undergo artificial joint replacement. For younger patients who can receive treatment to preserve the femoral head, the more effective methods are currently autologous bone marrow transplantation and compression bone grafting. Only one of the patients we treat has undergone another joint replacement. Joint replacement is one of the most mature procedures in orthopaedics in the past two decades and can treat joint pain and dysfunction due to joint destruction from any cause, with femoral head necrosis being one of its indications. Our department receives about 400 artificial joint replacements per year, and the author himself performs about 600 artificial joint replacements per year. He is very skilled in various complex artificial joint replacement procedures. The advice to patients with femoral head necrosis is to choose the right doctor and the right hospital.