The pain caused by femoral head necrosis and increased pressure in the femoral head cavity, as well as bone destruction, affecting the surrounding muscles, stimulating the joint capsule, and after the femoral head collapse or acetabular joint surface wear, pain relief drugs can be used as follows: 1. use non-steroidal anti-inflammatory and analgesic drugs, such as Fotarine and other direct analgesia. 2. use drugs to improve blood circulation, such as warfarin to improve blood clotting, and to improve blood circulation 3, you can also use drugs to improve bone metabolism and calcium supplementation, such as calcitriol. These drugs can promote the blood circulation of the bone and reduce the pressure on the femoral head, which can achieve the effect of pain relief.