Adults who drink 2500-3000ml of water a day under normal circumstances are normal, but the water referred to here are the daily drinking water, as well as the porridge, soup and so on when eating, as well as the water contained in the fruit and the water supplemented by functional drinks, all belong to the normal intake of water. However, for adults with basic diseases and relatively slow basal metabolic rate, such as thyroid insufficiency, this should be reduced by 500ml on top of the normal adult basic water intake; if too much water is consumed at this time, it will cause further aggravation of edema; if there is liver, kidney or heart insufficiency, it should also be reduced by 500-800ml on top of the normal water intake, otherwise it will Otherwise, the heart and kidneys will be overloaded.