You can drink a small amount of mineral water when you have a fever, but it is not easy to drink mineral water for a long time and in large quantities, mineral water contains certain minerals, there are few vitamins and trace elements, in the fever when the body due to evaporation of heat dissipation hyperactivity, there will be ionic disorders, etc.. Fever should be properly supplemented with sodium ions, potassium ions, chloride ions, calcium ions, phosphorus ions and other essential ions in the body, mineral water contains a small amount, can be properly supplemented with minerals, but it is recommended to boil before drinking, especially avoid drinking frozen mineral water, so as not to cause gastrointestinal discomfort.