Drinking too much water mildly affects normal life and sleep, and if there is heart disease, chronic kidney disease and other underlying diseases people may have edema, acute heart failure and so on. Drinking too much water will result in increased urine output and urination, which will affect normal work and life and sleep in mild cases. If there are underlying diseases, such as heart disease, chronic kidney disease, etc., drinking too much water can aggravate edema, electrolyte disorders, and in severe cases, acute heart failure may even occur. Normal people to ensure that the amount of water daily in 1500 ~ 2000 ml can be adjusted according to the amount of water content in the diet and sweating, with heart disease, chronic kidney disease patients should not drink too much water.