Generally speaking, the water loss of human body through urine, sweat or skin evaporation every day is about 1800-2000 ml, so people always think that it is necessary to replenish about 2000 ml of water every day. But this 2000 ml of water is not necessarily obtained by drinking water. All kinds of foods we eat every day contain a lot of water and should be counted together.

Therefore, after deducting 1000- 1200ml of water for three meals, we only need to drink 1500ml of water every day. The general principle is: not less than 500 ml, but not more than 3000 ml per day. People who need to drink more water, such as patients with gout and kidney calculi, should follow the doctor's advice.