Patients with kidney stones can eat eggplant, which contains mainly vitamins and has no great effect on the formation of kidney stones. There is no absolute contraindication to the diet of kidney stones, all dietary contraindications are relative, as long as the food is not contraindicated to eat three times a day can be eaten once in a while is not a problem. As the vast majority of kidney stones are calcium salt stones, such as calcium oxalate stones. Therefore, patients with kidney stones should try to avoid high calcium as well as high oxalate foods. Foods high in calcium, such as milk, dairy products and soy products; foods high in oxalate, such as spinach, celery, cauliflower, peas, tomatoes and so on. If you have gouty kidney stones, you should also limit your intake of high purine foods, such as various meats, seafood and animal offal.