Femoral head necrosis is a relatively common orthopedic disease that is extremely harmful, and the harm it brings varies with the development of the disease. About 50% of patients with stage I femoral head necrosis may have slender hip pain, which is aggravated when bearing weight. Restriction of hip joint activities, with the earliest occurrence of restriction of internal rotation activities, and the pain of hip joint aggravated by strong internal rotation. What should be the treatment at this time? Do I need to undergo surgery? The ARCO stages of femoral head necrosis: stage 0, stage I, stage II, stage III and stage IV. Stage 0: normal X-ray, cold bone scan and osteonecrosis on biopsy; Stage I: positive bone scan, positive MRI or both. Femoral head necrosis is a chronic progressive disabling disease with insidious onset, and early treatment is essential to prevent disability and improve prognosis. The treatment includes three major categories: conservative treatment, interventional treatment and surgical treatment. At present, patients with stage 0 and stage I femoral head necrosis are mainly treated conservatively and do not require surgery. The main principle of conservative treatment is to reduce or avoid weight bearing in order to facilitate the self-repair of the femoral head. The goal of treatment is to reconstruct the blood flow of the femoral head, promote the repair of necrotic bone, and prevent the femoral head from collapsing. The methods include rest and functional exercise, medication, electroacupuncture and Chinese medicine, hyperbaric oxygen therapy, extracorporeal shock wave therapy, and Chinese external therapy. Rest mainly emphasizes on reducing weight-bearing or no weight-bearing, using braces (crutches, canes) or bed rest, or even traction and braking of the affected limb for 3 months or longer. Functional exercise is used according to the patient’s functional disorders and the corresponding exercise methods, the purpose is to open the meridians, regulate the qi and blood, restore function. Pharmacological treatment can be done with non-steroidal anti-inflammatory and analgesic agents, low molecular heparin and Chinese herbal medicine for high coagulation and low fibrinolysis, sodium allantoin phosphate to prevent femoral head collapse, vasodilator drugs such as atropine, scopolamine, dihydroergotoxine and vincristine to reduce pain symptoms and intraosseous pressure. When a patient is diagnosed with osteonecrosis of the femoral head, he or she will be placed on bed rest with limited weight bearing on the affected limb. In the non-surgical treatment, it takes 1 to 3 years to repair femoral head necrosis, and only 6 months for fast repair, however, long-term non-weight bearing bed rest is not easy to implement and is not advocated. According to the stage of ischemic necrosis, the shape, the degree of functional limitation of the soft tissues around the hip joint and the physique, choose the appropriate sitting, standing and lying exercise methods.