After surgery for necrosis of bone, we should pay attention to a light diet, avoid spicy, greasy food and prohibit smoking and alcohol. Targeted care after necrosis of bone surgery is conducive to the patient’s recovery, especially in the diet should pay more attention. In the daily diet, we should pay attention to the light diet, reduce the intake of salt, eat more nutritious, protein-rich food, such as eggs, milk, lean meat and so on. Avoid spicy and greasy foods such as barbecue and hot pot. During the recovery period, you should also pay attention to the intake of fruits, eat more fruits can replenish vitamins and promote the recovery of the body. In addition, it is also important to note that during the postoperative recovery period, the intake of tobacco and alcohol should be prohibited, smoking and drinking will lead to vascular spasm and constriction, affecting the patient’s recovery time.