Stone prevention methods are as follows: 1, drink more water, do not hold urine: help stone material and bacteria from the urinary tract out of the body; 2, avoid drinking too much beer: beer contains a large amount of calcium, oxalic acid, purine, too much intake will lead to stone material deposition in the urinary system, which leads to stones; 3, reduce the intake of high-protein, high-fat food, control the intake of meat and animal offal: excessive meat and offal intake will lead to abnormal purine metabolism in the body, resulting in more uric acid formation and thus the formation of urinary stones; 4, avoid excessive salt intake: too salty food will aggravate the kidney burden, resulting in more uric acid formation and thus the formation of urinary stones. Offal intake will lead to abnormal purine metabolism in the body, leading to the formation of more uric acid and thus the formation of urinary stones; 4, to avoid excessive intake of salt: too salty food will aggravate the burden on the kidneys, affecting renal metabolism. Resulting in the body, the kidneys within the sedimentary material accumulation and the formation of stones; 5, careful with spinach: spinach contains a large amount of oxalic acid, and oxalic acid is one of the important components of the formation of oxalate of urinary stones; 6, avoid drinking milk before going to bed: milk contains calcium is more, too much calcium intake will also lead to an increase in urinary calcium and the formation of urinary calculi; 7, to avoid excessive intake of sugar: sugar affects the metabolism of calcium ions, oxalic acid and urine, affect the The pH of urine. After the increase of uric acid can make calcium urate, calcium oxalate deposition and the formation of stones; 8, dinner should not be too late: for gallstones, too late for dinner will lead to disorders in the body’s fat metabolism, resulting in an increase in cholesterol in the body, and finally will make the bile in the concentration of cholesterol is too high, the deposition and the formation of gallstones; 9, eat more vegetables and fruits: vegetables and fruits contain a relatively large number of vitamins and fibers, metabolism in the body is alkaline, and many stones in the acidic environment, the formation of stones in the urine. Many stones are formed in an acidic environment, so eat more fruits and vegetables in moderation.