Since the causes of kidney stones are not fully understood, the prevention of stone recurrence is mostly limited to the use of general preventive measures, more water and dietary therapy can effectively inhibit stone recurrence. First of all, drinking plenty of water has a preventive effect on all components of stones. In the hot summer, the risk of urinary stone growth increases significantly when the daily urine volume is less than 1200 ml. If you can make the daily water intake at 2000-4000 ml, this can maintain the daily urine volume at 2000 ml or more. The daily water intake can be given in the morning, between meals and before bedtime. Early morning water intake can be 500-1000 ml. In order to maintain the nighttime urine volume, drink 500 ml of water before going to bed, then drink 300-500 ml of water after getting up to urinate during sleep, and drink the rest of the water between meals respectively. Drinking large amounts of water can promote the discharge of small stones, and diluting urine can prevent the formation of urinary stone crystals and slow down the growth of stones. Secondly, adjust food composition according to stone composition and metabolic status. People with high urinary calcium should use less milk, soy products, chocolate and nuts; people with oxalate stones should limit the intake of strong tea, spinach, tomatoes and peanuts; patients with high uric acid should avoid animal viscera, etc. In short, a comprehensive nutritional balance should be maintained and the excessive intake of one of the nutrients should be avoided. In addition, drugs to prevent recurrence of urinary stones should be applied under the guidance of a doctor. Currently, it is believed that vitamin B6 (30mg per day) and magnesium oxide (400mg per day) have the effect of preventing oxalate stones when taken for a long time. Patients with oxalate stones and phosphate stones can take oral dihydrocoumaric acid. Patients with uric acid stones can take sodium bicarbonate and allopurinol orally. Vitamin K3 has an inhibitory effect on urinary stones. It is also necessary to apply drugs to regulate the urine pH according to the stone composition.