A normal person’s daily water intake is around 2,000 ml, including normal drinking water and water obtained from food, which may be increased or decreased appropriately in case of other diseases or weather changes. The body’s daily water loss includes both insensible and sensible evaporation, as well as water excreted in saliva, urine, and feces, and 2,000 ml is usually a basic intake. If the weather is hot and dry, water intake will increase accordingly and salt supplementation will be required at the same time. If you have respiratory diseases, such as upper respiratory tract infections, bronchitis, pneumonia, etc., your body needs a lot of water to increase metabolism and promote the removal of pathogens. If you have renal insufficiency, gastrointestinal bleeding disorders, edematous diseases or need to fast from water, you should control the amount of water accordingly with your condition. Water contains more trace elements required by the human body, each time you drink water needs to be moderate, should not drink too much to prevent aggravating the burden on the kidneys. Secondly, avoid drinking distilled water for a long time.