Urinary stones are a common disease of the urinary system in adults. Therefore, the prevention of the occurrence and development of urinary stones, in addition to the usual attention to drink a lot of water and appropriate exercise, depends to a large extent on whether to eat a reasonable. In summary, the following aspects are appropriate and contraindicated. The main aspects include the importance of dietary fiber, calcium-containing foods and vitamin food supplementation. 1, pay attention to dietary fiber intake: research shows that dietary fiber intake and the incidence of urinary stones is negatively correlated, increase the intake of dietary fiber can make the urinary calcium oxalate and uric acid reduced. Cereals, potatoes and fresh vegetables are rich in cellulose, so that the coarse and fine match, eat more fresh vegetables can play a beneficial role in increasing the dietary fiber. 2, increase the intake of food containing calcium: low calcium can make osteolysis greater than bone production, blood and urine calcium are increased, but also the absorption of oxalic acid and increased excretion through the urinary tract, so that oxalic acid and calcium deposition will occur, and promote the generation of urinary stones. Therefore, the diet should increase the intake of calcium-containing foods, such as milk, fish and shrimp, kelp, etc. Be careful not to take calcium supplements to prevent urinary stones, but too much calcium supplements have an increased risk of developing urinary stones. 3, eat more vitamin-rich food: vitamin B6 can reduce the formation of calcium oxalate crystals in urine, vitamin K can reduce the content of oxalic acid in urine, so the intake of these two vitamins in the diet should be increased. Green vegetables such as alfalfa, cabbage, and oranges are rich in both vitamins and can help reduce the incidence of urinary stones when eaten properly. Avoid: Limit foods with high oxalic acid content, animal protein foods and foods with high salt content, etc. 1, limit the amount of oxalic acid food intake: most of the oxalic acid in urine comes from the body’s metabolism, a few are from food, but still pay attention to reduce the absorption of oxalic acid in the intestinal tract, we should try to avoid foods rich in oxalic acid such as chocolate, coffee, etc. 2, control the intake of animal protein food: excessive intake of animal protein can increase the excretion of oxalic acid and calcium by urine, reduce the excretion of citrate, reduce urinary PH and increase the chances 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 increase urinary calcium, while reducing the excretion of citrate, which increases the incidence of urinary stones, so in the daily diet when cooking to put less salt, to eat less pickles, bacon and fried food, to keep the diet light. Also pay attention to drink more water to prevent the occurrence and recurrence of urinary stones.