Patients with kidney stones should ideally drink between 2500-4000 ml of water per day and observe that their urine is clear and colorless or slightly yellowish. Current research shows that drinking water has very great benefits for kidney stones, both in terms of prevention and treatment. For patients with kidney stones, drinking water has more benefits: first, it can flush the urinary tract and expel urine crystals from the body. The urine crystals are the precursors of kidney stone formation, which helps to inhibit the formation of kidney stones and prevent the kidney stones already formed from increasing in size. Secondly, for kidney stones that have already formed, drinking water is also beneficial to the downward movement of kidney stones and promotes the discharge of kidney stones. Thirdly, it can flush the urinary tract and reduce the chance of urinary tract infection, which is also the reason for inhibiting the formation of kidney stones.