Kidney calculi patients should reduce the intake of foods that are easy to produce oxalic acid, such as spinach, amaranth, spinach, mustard and so on. And avoid taking a lot of vitamin C. For the elderly, calcium supplementation is generally unrestricted, but it should be done while eating. Spinach tofu can't be eaten. It doesn't make sense. At present, the incidence of uric acid stones is increasing year by year, which is related to the excessive intake of meat and fat by modern people. Patients with uric acid stones should eat less purine-producing foods such as animal viscera, seafood, beef and mutton, soup and nuts. Drinking water is also an important part of preventing recurrence of stones. It is suggested that patients with stones drink more than 4000ml of liquid every day, and keep discharging more than 1500ml of urine every day, so as to keep the urine in a very diluted state. It is suggested that the daily urine output of patients with uric acid stones should be more than 2000ml, and that of patients with cystine stones should be more than 3000ml. The types of drinking water are mainly boiled water, purified water and mineral water, and weak tea, orange juice and watermelon are all good ways to get water. Take the initiative to drink water, and drink water evenly all day. In addition to the daily care of patients, I suggest that patients be treated with traditional Chinese medicine, such as urine; Poison; Mental'' urine; Poison; Clear patients can check to see which one is most suitable for their own situation. Vitamin B6 has a wide range of food sources, which are contained in animals and plants, but generally the content is not high. Meat, cereals, vegetables and nuts have the highest content. The content of animal food is relatively high, with the highest content of meat, especially chicken and fish, followed by liver, beans and egg yolk, nuts and vegetables. From the perspective of bioavailability, the bioavailability of vitamin B6 in animal-derived foods is higher than that in plant-derived foods. Vitamin B6 content in some common foods (mg/ 100g): Vitamin B6 content in food name 1 tuna 0.902 beef liver 0.843 chicken viscera (fried) 0.624 beef kidney (raw) 0.435 chicken (fried, roasted and fried) 0.4 1 6 fried.