Everyone is exposed to water every day, but sometimes its importance is overlooked. According to the different growth sites of urinary stones, urinary stones can be roughly divided into kidney stones, ureteral stones, bladder stones, urethral stones, etc. According to the composition, urinary stones are further divided into calcium oxalate stones (70% to 80% of stones belong to this category), calcium phosphate stones, urate stones, etc. Regardless of the location and composition, urinary stones are essentially crystals formed in the urinary system by metabolites that collect in the body and then precipitate to form stones. The size and shape of stones vary. Normally, the body has an “ecosystem” that prevents stone formation, but because of lifestyle habits, external environment, genetics and other factors, the system is out of balance, providing the soil for stone formation. Among the many factors that influence stone formation, the daily diet and food are the most important ones that can be adjusted and intervened. Drinking more water helps in the elimination and prevention of stones Water has a diluting effect and speeds up the excretion of metabolites such as inorganic salts in the body so that they do not accumulate in certain parts of the body, and even if certain small stones have formed, they do not grow larger and larger like a snowball and develop into a pathological state. Similarly, a person already suffering from stones, in conjunction with certain treatment, drinking more water can also slow down the speed of existing stones to become larger, in some cases, water can also “wash away” smaller stones, relieve the pain caused by stones and other symptoms. Drinking more water to prevent and control stones is justified, but it is not the case that the more water you consume, the better. What kind of water to drink? Soda and other beverages contain high sugar and calories, drink more easily to increase the burden on the kidneys, it is recommended to drink less or not; tea (especially strong tea), coffee, juice, can be used as an auxiliary beverage, not recommended to drink more. How much water to drink? Patients with stones drink 2500ml~3000ml of water every day, specifically to a person can refer to the urine color to increase or decrease the amount, the normal urine is a light yellow clarified liquid, the color is dark suggests that the water may drink less, should be appropriate to increase the amount. Drinking more water can prevent and control stones, in addition to drinking water directly to obtain water, water in the daily diet is also an important source.