Urinary stones are broadly categorized into calcium-containing stones and non-calcium-containing stones according to their chemical composition. Calcium-containing stones account for 80-95% of the total and are mainly composed of calcium oxalate and calcium phosphate. In addition to drinking a lot of water, but also according to the composition of the stones to adjust the diet. 1, calcium oxalate stones: avoid eating: carrots, spinach, celery, lettuce, plums, citrus, soy products and chocolate; avoid drinking: black tea, cocoa, beer, cola and so on. 2, calcium phosphate and magnesium ammonium phosphate stones: low calcium phosphate diet and acidic food. It is recommended to control urinary tract infections; avoid eating all dairy products, beans, egg yolks and lemon juice with phosphoric acid, cola, coffee and so on. 3.High urinary calcium stones: It is recommended to adopt an acidic diet and reduce calcium intake, and dairy products should not exceed 300cc per day. 4.Uric acid stones: It is recommended to adopt an alkaline diet. Recommended food: grains should be mainly fine grains; more fresh vegetables and fruits; eggs and milk can be appropriate intake. Limit protein intake. Avoid the use of food: liver, brain, kidney and other animal offal, dried meat, various broths, gravy, salted or fried food; seafood: mackerel, sardines, whitebait, clams, crabs, etc.; vegetables: spinach, cauliflower, longbeans, various legumes, and mushrooms; beverages: alcohol, strong tea, coffee, cocoa, etc.; 5, cystine stones: low-methionine acid diet. Eat less meat, eggs and dairy foods. Dietary components on the impact of stones: 1, water: chronic dehydration and insufficient water intake is closely related to the formation of uroliths. Increasing water intake can reduce the risk of urinary stone formation through a variety of mechanisms. It is recognized that a reasonable amount of water consumption is not less than 2 liters per day, with special attention to drinking a certain amount of water at night, and it is very important to replenish a sufficient amount of fluids at night while sleeping. Drinking 2,500ml of fluid per day has been reported to prevent de novo stone formation in hypercalciuric individuals. It is usually recommended to drink 250 ml of water every 4 hours, plus 250 ml with each meal. As for what kind of fluid to drink, the consensus is that a milk-free, less oxalic acid fluid is preferred. Opinions on drinking hard and soft water are still divided, but it has not been proven that hard water is more likely to cause urinary stone formation than soft water. And fluid pathology has confirmed the negative correlation between water hardness and kidney stones. So the amount of water is the key, and must be taken into account both day and night. 2, calcium: it has been proved that the widespread practice of restricting calcium in the diet, not only can not reduce, but will increase the risk of kidney stone formation. Low-calcium diet can promote intestinal oxalate absorption and cause high oxaluria, thus promoting the formation of urinary stones. Low-calcium diets given to patients with urinary stones have been reported to be often more harmful than normal calcium diets. However, studies have shown that calcium supplementation in postmenopausal women does not increase the risk of stone formation, and even if there is a risk, it only occurs during the first few months of calcium supplementation. It is best to increase water intake during this period. 3, oxalate: because most of the urinary stones contain oxalate, so reduce urinary oxalate will certainly reduce the occurrence of urolithiasis. However, most of the ordinary diet in oxalic acid content is small, and the absorption rate is not high, under normal circumstances, dietary oxalic acid only 8-12% is absorbed. Therefore, the role of limiting oxalate intake in patients with high oxalate urolithiasis without intestinal disease is unpredictable. Oxalic acid absorption increases only when gut bacteria are insufficient or deficient. 25-30% of urinary oxalate is a metabolite of vitamin C. Therefore, vitamin C plays an important role in urinary oxalate and urinary stone formation. Although the recommended dose of vitamin C is 60mg/d, some people consume large amounts of vitamin C for various reasons, but there is still disagreement on whether large amounts of vitamin C can significantly increase urinary oxalate excretion, which leads to the formation of urinary calcium oxalate stones. Therefore, patients with urinary calculi large doses of vitamin C still need to be cautious, and avoid strong tea, do not eat a lot of chocolate and spinach. 4, protein: urolithiasis and affluence related to life, that is, and high protein diet. Some studies have shown that a high protein diet can increase the incidence of urinary calculi. On the contrary, the vegetable diet without animal protein contains oxalate higher, but the risk of stone occurrence is low. Therefore, moderation of food protein, especially animal protein, is beneficial to all stone patients. 5, salt: generally speaking, there is basically no difference between patients with urinary stones and controls in terms of salt habits. However, some studies have concluded that a high sodium diet can increase the tendency of calcium salt crystallization in urine. The amount of salt in the diet to less than 10g / d is appropriate. 6, fat: patients with calcium-containing urinary calculi urinary excretion of fingerprints higher than normal, but this has nothing to do with diet. However, the incidence of coronary artery disease and kidney stones in Eskimos are low, which is related to their intake of non-unsaturated fatty acids. 7, alcohol: moderate alcohol consumption does not increase the risk of stone formation. Although long-term drinkers high urinary calcium and high urinary phosphorus is more obvious, but the diuretic effect caused by alcohol can reduce the concentration of urinary components. 8, citrate: citrate is a natural inhibitor of urolithiasis. The following fruits are rich in citrate: citrus, grapefruit, pineapple. Citrus is more commonly used as an adjunctive treatment for low-citrate calcium-containing kidney stones. However, a high intake of citrate-containing fruits and vegetables can lead to high oxaluria, which offsets the benefits of increasing citrate in the diet.