Urinary stones are a common disease of the adult urinary system. Its incidence and dietary relationship is extremely close, therefore, to prevent the occurrence and development of urinary calculi, to a large extent, depends on whether to eat reasonably. Experts pointed out that the measures to prevent urinary stones lies in the scientific and reasonable diet, summarized in the following aspects of the appropriate and contraindicated. Desirable: mainly including the importance of dietary fiber, calcium-containing foods and vitamin food supplementation in three areas. 1, pay attention to dietary fiber intake: studies have shown that dietary fiber intake and the incidence of urinary calculi is negatively correlated to increase dietary fiber intake can make the urinary calcium oxalate and uric acid reduction. Cereals, potatoes and fresh vegetables are rich in fiber, to do coarse and fine mix, eat more fresh vegetables can play a useful role in increasing dietary fiber. 2, increase the intake of calcium-containing foods: low-calcium can make osteolysis greater than bone generation, blood and urine calcium are higher, but also make the absorption of oxalic acid and excretion through the urinary tract increased, so that oxalic acid and calcium deposition occurs to promote the generation of urinary calculi. Therefore, the diet should increase the intake of calcium-containing foods, such as milk, fish and shrimp, kelp and so on. Be careful not to take calcium to prevent urinary calculi, too much calcium instead of increasing the risk of urinary calculi. 3, eat more vitamin-rich foods: vitamin B6 can reduce the formation of urinary calcium oxalate crystals, vitamin K can reduce urinary oxalic acid content, and thus in the diet should increase the intake of these two vitamins. Green vegetables such as alfalfa, spinach, cabbage and oranges are rich in two vitamins, eat some appropriate to help reduce the incidence of urinary calculi. Avoid: mainly include limiting the amount of food containing oxalic acid, animal protein food and high salt food and so on 3 aspects. 1, limit the amount of oxalic acid food intake: most of the urinary oxalic acid from the body’s metabolism, a small number of food, but still pay attention to reduce the intestinal absorption of oxalic acid, to try to avoid eating oxalic acid-rich foods such as chocolate, coffee and so on. 2, control the intake of animal protein food: excessive intake of animal protein can increase the excretion of oxalic acid and calcium from the urine, reduce the excretion of citrate, reduce urinary pH and increase the chance of urinary stone formation. So in the diet should pay attention to control the excessive intake of animal protein. 3, avoid eating high salt food: high salt food can promote the increase of urinary calcium, at the same time reduce the excretion of citrate, thus increasing the incidence of urinary stones, so in the daily meal cooking should be less salt, to eat less salted vegetables, bacon and fried food, to maintain a light diet. At the same time, pay attention to drink more water, in order to prevent the occurrence and recurrence of urinary stones.