The components of bladder stones are mostly calcium oxalate stones. Dietary precautions include: First, drink more water to increase urine output, promote the expulsion of stones, and prevent further enlargement of the stones. Second, you can drink water with lemon slices to increase the citric acid content in the urine, inhibit the formation of stones, and prevent recurrence. Third, you can consume oranges and other citrus fruits to alkalinize the urine and prevent the stones from growing larger. Fourth, it is recommended to maintain a balanced diet to keep the concentration of various substances in the body stable and in proper proportion, avoiding an increase in the concentration of certain stone-forming substances in the urine.