Rehabilitation training of femoral head necrosis is mainly based on the treatment of effective training, with flexion and extension, abduction and internal rotation training as the main, the training methods are as follows: 1, hip flexion and extension exercise: each time you can do 10-15, 3-5 groups per day, flexion of the hip more than 90 degrees, in order to preserve the function of the hip joint; 2, hip adduction exercise: you can swing the leg outward in the standing position or lateral position, 3-5 groups per day; 3, internal rotation function exercise: in the process of flexion and abduction training, the function of internal and external rotation should also be protected to a certain extent. 5 groups, 10-15 each time, to prevent contracture of the lateral psoas muscle; 3, internal rotation function exercise: in the process of flexion and abduction training, the function of internal and external rotation should also be protected to a certain extent. By following the above methods, the progression of femoral head necrosis can be slowed down, while long-term exercise can preserve the basic function of the hip joint.