Femoral head necrosis is a common orthopedic disease during my specialist clinics, mostly for a reason. Most of the patients are already in advanced stages of necrosis when they come to the doctor and can only undergo joint replacement surgery. Prevention is better than cure, so I believe that prevention of femoral head necrosis should not be underestimated. It is recommended to pay attention to the following points. 1.Be sure to strengthen the awareness of self-protection of the hip. 2.When walking, pay attention to your feet and be careful of falling, especially in winter when walking on ice and snow to prevent slipping and falling. 3, before sports, do a good job of hip preparation activities, feel the body warm, limbs flexible for the degree. 4.When carrying and carrying heavy objects, avoid spraining the hip and try not to do heavy work. 5, hip injuries should be treated in a timely manner, do not walk too much before the injury is healed, so as not to repeatedly damage the hip joint. 6, in the treatment of certain diseases, especially some painful diseases, try not to use or use less hormone drugs. 7, try not to develop a long-term problem of drinking a lot of alcohol. You should change the bad habit of long-term alcohol abuse or quit drinking, get rid of the contact environment of pathogenic factors, remove the chemical toxicity of alcohol and prevent tissue absorption. 8.Anatomical repositioning and strong internal fixation should be used for femoral neck fractures to increase blood flow to the head and prevent osteonecrosis. Regular follow-up should be performed after surgery, and appropriate oral herbal medicines and calcium supplements to promote blood flow should be taken to prevent the occurrence of ischemic femoral head. 9. When hormones must be applied because of related diseases, the principle of short-term and moderate dosage should be mastered, together with vasodilators, vitamin D and calcium, etc. Do not abuse hormonal drugs without medical advice. 10, occupational factors such as deep-water divers, high-altitude pilots, high-pressure work environment personnel should pay attention to labor protection and improve working conditions, and those who have fallen ill should change the type of work and seek timely medical attention. 11, diet should be done: do not eat chili, do not drink alcohol in excess, do not take hormonal drugs, pay attention to increase the intake of calcium, eat fresh vegetables and fruits, more sunshine, prevent weight bearing, regular activities, etc. have a preventive effect on femoral head necrosis.