Perforation decompression for necrosis of the femoral head is useful. Perforation decompression of femoral head necrosis generally refers to medullary core decompression, which is based on the principle of lowering the pressure in the medullary cavity of the femoral head by drilling holes, and also reduces pain, and also creates channels to promote the formation of new blood vessels. It can help to reduce the pressure inside the bone, reduce pain and improve venous return. It helps blood vessels to grow in and improve the condition. Medullary core decompression is suitable for patients with femoral head necrosis who have not experienced collapse in the early stage. After the operation, it is necessary to pay attention to help the patient to put the soft cushion under his/her affected limb to avoid the bad situation of internal and external rotation of the hip and dislocation of the joint. Do not sit on too short a stool or sit cross-legged while the rehabilitation exercise is not completed. It is recommended that patients with necrosis of the femoral head go to regular hospitals to undergo core decompression surgery under the correct operation of doctors.