Because of the high recurrence rate of urolithiasis, scientific prevention of recurrence is crucial. 1, drink more than 2000ml of water daily, to ensure the daily urine volume of about 2000ml. 2.Eat citrus fruits in moderation to increase the content of potassium citrate in urine. 3, daily consumption of salt less than 5 grams. 4, except for patients with clear hypercalciuria, generally patients do not need to avoid milk, beans and other calcium-containing foods. 5. Six months after urinary stones are cured, routine ultrasound examination of the urinary system must be performed, and abdominal X-ray plain film examination within one year. 6.The discharged stone powder must be collected and sent for examination to determine the specific prevention program according to the following analytical components 1, calcium oxalate stones: avoid spinach, sweet radish, tea, chocolate, various dried fruits (pine nuts, chestnuts, peanuts, etc.), strawberries, wheat bran. 2, uric acid stones: avoid eating animal offal and alcohol; limit meat and fish, not more than 100 grams per day; eat less cauliflower, mushrooms; alkalize urine. 3, calcium magnesium phosphate and calcium carbonate mixed stones: control urinary tract infection; take vinegar to acidify the urine. 4, calcium phosphate stones: avoid eating pumpkin seeds, coffee, strong tea.