One of the common causes of femoral head necrosis is long-term heavy alcohol consumption, so patients with femoral head necrosis should first quit drinking. The narrowing, spasm and blockage of blood vessels supplying the femoral head are the direct causes of ischemia and necrosis of the femoral head. Cigarettes have a large amount of nicotine and nicotine, which can cause blood vessel spasm and aggravate the obstruction of blood supply to the femoral head, so patients with femoral head necrosis need to quit smoking. High blood lipid status is also an important cause or aggravation of femoral head necrosis, so patients with femoral head necrosis should have a light diet, try to eat less greasy, fried, high-fat food, and eat more vegetables and fruits. Patients with osteonecrosis of the femoral head gradually develop osteoporosis due to impaired blood supply to the femoral head and reduced bone production, so they should eat more milk, soy milk, tofu, lean meat, fish and shrimp and other foods with high calcium content to promote calcium absorption. The destruction of femoral head cartilage will occur in the late stage of femoral head necrosis, so more food such as brittle bone and shrimp should be consumed, which is good for promoting cartilage synthesis.