The rehabilitation training of femoral head necrosis is based on the non-weight bearing exercise of hip joint, and the three functional exercises of hip flexion and extension, abduction and internal rotation are feasible, and swimming and cycling are also available. 1. Hip flexion and extension exercise: stand on one foot, hold the railing on the side, and swing the affected limb forward and backward slowly for 5 minutes, alternately. You can also do active hip flexion and extension exercises in the prone position with the assistance of your family members, and the length of the exercise is also 5 to 10 minutes. 2. Hip abduction exercise: supine position, the affected limb try to unfold outward and then retracted, do leg splitting exercise, 20 times for a group, each time 5 groups. 3. Hip internal rotation exercise: supine position, both lower limbs straight, heel as the axis of internal rotation training, a group of about 5 minutes. 4. Swimming, cycling: it can exercise the muscles around the hip joint well, and the pressure load on the hip joint is low, which is more suitable for the rehabilitation exercise after femoral head necrosis. If you are diagnosed with necrosis of the femoral head, you should consult a doctor in time and choose a suitable treatment plan according to your condition. Hip rehabilitation training should be carried out under the guidance of professionals according to the doctor’s instruction, and if abnormal pain and activity limitation occur during the period, we should consult the doctor in time.