Kidney and urinary tract stone preventive measures include: 1, maintain a certain amount of drinking water, the vast majority of urinary tract stones are due to supersaturation precipitation, that is, less drinking water and lead to excessive concentration of urine, the concentration of components in the urine is oversaturated will precipitate the formation of crystals, and the further formation of stone changes. So usually need to drink more water, drinking water recommended daily> 2000ml above. 2, in the diet should pay attention to reduce the rich oxalic acid and purine food, such as spinach, lettuce, all kinds of nuts, chocolate, cocoa, strawberries, prunes contain high oxalic acid, too much intake will be prone to suffer from calcium oxalate stone. Diet also need to reduce seafood, barbecue or long-term large amount of alcohol, these may lead to the incidence of stone increased probability. 3, diet to reduce the high fat diet, too high greasy diet can lead to intestinal absorption of calcium to reduce the calcium from the kidneys to increase the excretion of calcium from the kidneys will lead to the formation of stones. In addition, the diet should not consume too much salt food, which can lead to an increase in the amount of calcium discharged in the urine and make the probability of suffering from stones increased.