The treatment of fever needs to be considered according to the cause of the fever, as well as the severity of the illness and the overall physical condition of the patient. If the fever is caused by a common cold and the condition is mild, it can be cured by oral administration of medication without the need for fluids or injections. If the fever persists and the condition is severe, it is recommended to use intravenous fluids to treat the illness. Intravenous fluids are not only given to reduce the fever, but also to standardize the use of antibiotics, actively eliminate inflammation, and replenish the body’s heat and blood volume, so that the treatment of the disease is more effective and more thorough. Fever caused by the common cold does not need to be treated with intravenous fluids. In the treatment of disease, it is best to maintain the principle of treatment that can be taken without injection, can be injected without infusion, especially some children, need to increase a certain degree of resistance to disease, the way of fever administration should be based on the specific condition to determine.