Urinary stones are prone to recurrence, which is a headache for doctors and patients. So how to prevent recurrence? First of all, we need to develop the habit of drinking more water, how much to drink, we recommend a simple way to judge, your urine color is not yellow, the amount of water is enough. Generally, you should drink 2,000 to 3,000 ml of water every day, clinically called “hydration”, which is essential to prevent stone formation. Second, is to pay attention to dietary regulation, such as high calcium urine patients, should eat less high calcium food such as milk; high oxalic acid urine patients should eat less food rich in high oxalic acid, such as spring spinach, black tea, etc.; uric acid stone patients should eat less purine-rich food, such as liver, kidney and other animal offal. Finally, you should insist on taking medication for prevention, especially for recurrent stone patients, you should go to the hospital to find out the cause of the stone, so as to carry out selective drug treatment. Most of them can prevent the recurrence of stones as long as the medication is taken consistently.