The surgical methods of femoral head necrosis are as follows, including the following: 1. Head preservation surgery: such as medullary decompression, drilling holes in the femoral head to reduce the internal pressure of the femoral head and relieve pain; the technique of bone grafting with blood vessels to restore blood flow and promote the regrowth of the ischemic and necrotic part of the femoral head through bone grafting with blood vessels; transferring the necrotic area of the femoral head to a non-weight-bearing area and using the unlesioned area for support to achieve symptom relief; 2. Artificial joint replacement: when the femoral head has major deformation, rupture or collapse and the hip preservation surgery is not effective, the damaged femoral head is replaced with a brand new artificial joint so that the patient can rejoin society.