If the kidney has crystals, it is recommended to decide how to eat according to the composition of the crystals: 1, if it is oxalate crystals, it is recommended to avoid using spinach, lettuce, strawberries, and avoid drinking strong tea, reduce the consumption of chocolate or eat a variety of dried fruits, these foods have more oxalic acid content, easy to form oxalate crystals; 2, if it is phosphate crystals should not drink alkaline beverages, the common on the market 3, if it is crystals of uric acid, pay attention to avoid the use of animal offal, reduce the consumption of alcohol, especially beer, and to limit the intake of fish, shrimp and other seafood substances, these substances contain more purines, easy to form uric acid crystals; 4, if it is cystine crystals, it is recommended to limit the diet of meat, eggs, peanuts and soy products to reduce the cystine content, so as to avoid the formation of crystals.