Femoral head necrosis is an ischemic necrosis of bone tissue, also known as aseptic osteonecrosis, which is a common disease. It is a common disease and is related to many factors such as trauma, hormone application and alcohol abuse. Bone cancer is a tumor of the bone, which can occur in bone cells, hematopoietic components of the bone, cartilage, and fibrous or periosteal components. Because of the high pressure in the hip joint, patients with osteonecrosis should not stand or walk for too long, which will increase the pressure in the hip joint. However, it is important to do some relaxing outdoor activities. It can improve the function of the hip joint, relieve muscle spasm and reduce pain.