As kidney stone attacks are extremely painful for patients, there is an urgent need for professional doctors to provide guidance on preventing stone recurrence. A proper diet is the first choice to prevent and treat kidney stones. Depending on the composition of urinary stones, reasonable dietary structure needs to be adjusted to prevent stone recurrence. For the recurrence of urinary stones, the current effective prevention strategies are as follows: 1. Drink more water, do not hold urine Many white-collar workers, work at a tight pace, usually drink less water and exercise less, many small stones that could have been excreted accumulate inside the urinary tract, the volume will continue to increase, and the number gradually increased, and eventually cause disease. Therefore, attention should be paid to drinking more water to ensure that the daily urine volume is about 1500-2000ml. In fact, some small stones can be excreted with urine if the volume of urine is high and with proper exercise. Don’t hold urine, drinking more and more urine helps bacteria, carcinogenic substances and stone materials to be excreted out of the body quickly and reduce the chance of kidney damage. Suggestions for the time of day to drink water: 6:30 250 ml of warm plain water to replenish the water lost during the night, while helping to detoxify the body in the early morning. 8:30 250 ml of water. 11:30 Drinking water before lunch helps to activate the digestive system vitality. (But the amount of water needs to be controlled, too much tends to interfere with the digestion of food for lunch). 12：30 1 hour after lunch to promote the absorption of nutrients (control the amount of water to avoid diluting gastric juices, affecting the digestion and absorption of food). 14：00 Drink water before going to work. 17：00 This time of hydration also brings a feeling of fullness in the stomach and intestines, reducing the amount of food eaten at dinner, suitable for people who want to lose weight. 20：00 200ml of water to reduce blood viscosity. The human body is 60% water, when the lack of 2% will produce thirst, when thirsty to drink water is obviously unscientific, but should be thirsty to drink water before. Drinking water should not be fixed, mineral water, pure water, spring water, distilled water, tap water, all have their own benefits, can complement each other, can choose different water to drink, but it is recommended to boil after drinking. Patients with stones drink less mineral water, or water rich in mineral salts. 2, drink less beer, carbonated beverages and sugary drinks in the summer drinking beer is a very comfortable thing, but beer contains more calcium oxalate, bird nucleotides, can form kidney stones, so stone patients or potential people should not drink too much beer in the summer. Carbonated drinks and sugary drinks can increase the concentration of calcium ions in urine, oxalic acid and acidity of urine, prompting stone formation. So do not drink instead of drinking water, as the saying goes, to quench thirst or hot tea, summer to drink more chrysanthemum tea, green tea water, herbal tea and light salt water is best. 3, do not drink milk before bed Milk is nutritious, but milk contains more calcium, drinking can make the urine calcium concentration increased sharply, so when it is in a sleep state, urine concentration, calcium through the kidneys more, so easy to form stones, so for people with a history of stones before bed, it is best not to drink milk. 4, eat less salt Too salty diet will increase the workload of the kidneys, and salt and calcium in the body has a synergistic effect, and can interfere with the metabolic process of drugs to prevent and treat kidney stones. The daily intake of salt should be less than 5 grams. 5, for different types of stone composition, need to reasonably adjust the diet According to the chemical composition of stones can be divided into the following: calcium oxalate stones, calcium phosphate stones, uric acid stones, magnesium phosphate amine stones and cystine stones. Patients with calcium oxalate stones are advised to eat less foods with high oxalic acid content, such as radish, spinach, amaranth, celery, lettuce, bamboo shoots, potatoes and soy products, cocoa, chocolate, black tea, lime, cola, beer; foods with high vitamin C should not be eaten in excess such as citrus, lemon, tomatoes, strawberries, etc.; oral vitamin B6 and magnesium preparations are beneficial for the prevention and treatment of atopic hyperoxalate urolithiasis. Uric acid stones limit protein intake (less meat, animal offal), more fresh vegetables and fruits, should not eat high purine food, such as animal offal, spinach, all kinds of beans, cauliflower, seafood, etc. Drinking alcohol, especially beer, can increase the level of uric acid and cause urine concentration, so it should not be consumed; excessive intake of animal protein can lead to an increase in calcium and uric acid and a decrease in citrate in urine, and this situation is an important factor in promoting the formation of urinary stones. Therefore, the daily diet should be mainly vegetarian, with more fiber-rich foods. Magnesium ammonium phosphate stones and calcium phosphate stones: Most of the stones are formed after infection, and it is recommended to strengthen the control of infection. Alkaline urine is prone to the formation of magnesium ammonium phosphate stones (urine pH > 7.2). A low calcium phosphate diet and acidic foods are advisable. All dairy products, lemon juice with phosphate, cola, coffee should be prohibited. Amine chloride can acidify the urine. Calcium stones should be limited to foods rich in calcium and oxalic acid. Foods high in calcium include milk, dairy products, refined white flour, chocolate, nuts, etc. Excessive intake of calcium and sodium may lead to high urinary calcium, thus increasing the chance of stone formation; sugar and its products, beverages, etc. may increase urinary calcium, which may promote intestinal absorption of calcium and correspondingly increase the absorption of oxalic acid, thus leading to increased urinary calcium excretion, a risk factor for stone formation. Increase the intake of magnesium and citrate can reduce the risk of urinary stone formation. In general, the consumption of foods containing high calcium such as milk does not affect the calcium metabolism of the body and can be consumed normally.