Is it useful to have a fever and drink salt water?

During fever, drink light salt water, can supplement the body water, maintain electrolyte balance, but take salt water and can not reduce fever. If the temperature is higher than 38.5 degrees, can take ibuprofen fever treatment; temperature does not reach 38.5 degrees, can be through warm bath, warm bath and other ways of physical cooling. Usually diet to light mainly, more rest.