Unless normal physiological needs, it is not good for people to drink too much water in a day, drinking water in moderation is fine. In general, adults need to intake of water for 1500-1700 ml per day. But if there are special physiological needs, such as in a hot environment or sweat more after strenuous exercise, the intake of water can be increased accordingly. If there is no special physiological needs, drink too much water a day, far more than the body’s needs, there may be edema, electrolyte disorders, while increasing the burden on the kidneys, affecting kidney function. So drinking too much water a day is also not good for human health. In addition, if there is an abnormal increase in drinking water, be alert to diabetes, uremia and other conditions, the need to consult a doctor in a timely manner to find out the cause, do not miss the condition.