Acute tubular necrosis (ATN) is the most common type of acute renal failure, accounting for approximately 75% to 80% of cases. It is a clinical syndrome that occurs as a result of acute, progressive decompensation of renal function due to renal ischemia and/or nephrotoxic damage caused by various etiologies. The main manifestations are progressive azotemia due to a marked decrease in glomerular filtration rate, and imbalance of water, electrolyte and acid-base balance due to low renal tubular reabsorption and excretion function. Dietary considerations for patients with tubular necrosis: 1. The dietary treatment of patients with tubular necrosis must be reasonable and nutritious, and should also avoid contact with various allergic foods, avoid fish, shrimp, crab, pollen, cow’s milk and other diets that may induce tubular necrosis. 2, for patients with tubular necrosis diet, we should also pay attention to some taboo foods, such as over-salty, spicy and stimulating, being stained, dyed barbecue, these foods are not allowed to eat. And for renal insufficiency or the occurrence of uremia, beans and their finished products can not be eaten, restrict animal high egg white food, greasy food, etc. 3, kidney disease if there is no heavier edema, heart failure, hypertension, should not blindly limit water. Because the kidney concentration function decreases, the metabolites in the body need more water to be discharged from the kidneys, if the water intake is restricted at this time, the metabolites in the body can not be discharged, it will cause blockage, the consequences are more serious. 4, reasonable diet, not partial food, not picky food, to ensure a balance of nutrition. Grains and cereals, novel vegetables and fruits, lean meat from cattle, sheep and pigs can be consumed. 5, in order to avoid further aggravation of tubular necrosis, patients can exercise, enhance their own physical fitness, improve the immunity of individuals to various types of infection, to prevent the deterioration of the disease. 6, salt moderation, according to the condition and kidney function level to make adjustments, not all tubular necrosis should be strictly salt restriction.