1. Limit the intake of foods containing a large amount of oxalic acid: most of the oxalic acid in urine comes from body metabolism, and a small amount comes from food, but attention should still be paid to reducing the absorption of oxalic acid in the intestine and avoiding foods rich in oxalic acid such as chocolate and coffee.

2. Control the intake of protein food in animals: Excessive intake of protein can increase the excretion of oxalic acid and calcium in urine, decrease the excretion of citrate, lower the PH value of urine and increase the probability of urinary calculi. Therefore, we should pay attention to control the excessive intake of protein in the diet.

3. Avoid eating high-salt foods: High-salt foods can increase urinary calcium and reduce citrate excretion, thus increasing the incidence of urinary calculi. Therefore, when cooking in daily diet, we should put less salt, eat less pickles, bacon and fried food, and keep the diet light. At the same time, pay attention to drink plenty of water to prevent the occurrence and recurrence of urinary calculi.

The medicine can be Shi Yu tea, which is a traditional Chinese medicine, and it helps to expel stones. According to the composition of stones, the diet should be adjusted appropriately. For patients with oxalate stones, it is advisable to eat less foods rich in oxalic acid, such as potatoes and spinach. Oral vitamin B6 can reduce the excretion of oxalate in urine, while oral magnesium oxide can increase the solubility of oxalate in urine. Patients with phosphate stones should have a low-phosphorus and low-calcium diet, and oral acidification of urine with ammonium chloride is beneficial to the dissolution of phosphate. Patients with urate stones should eat foods rich in purine, such as liver, kidney and beans, and take orally citric acid mixture or sodium bicarbonate to alkalize urine to keep the pH value of urine above 6.5.