Foods containing high levels of oxalates such as spinach are not recommended for stone patients. Since most urinary stone components are calcium oxalate stones and uric acid stones, the intake of foods containing high levels of oxalates, such as spinach, celery, kale family, parsley, and peppers, should be limited. Fruits such as grapes, strawberries, cocoa, longan, lychee, mango, durian and pineapple should also be properly controlled. In addition, excessive protein intake is also detrimental to stone prevention, for example, beans, soy products, and large amounts of meat should also be limited. Of course, it is not that once stones occur, you should not eat a lot of food, as long as you do it in moderation and ensure that you drink more than 2000ml of water per day, there will be no problem. Regular review and improvement of good drinking and eating habits are important to prevent the occurrence of stones.