Electric blankets should not be used when fever is present, and even when fever patients are chilled, they should not use electric blankets. For fever patients, physical cooling should be given at this time, such as warm water baths and alcohol baths, so that the body temperature can gradually drop through the heat dissipation of the body. If the electric blanket is used during fever, it will not help the body to dissipate heat, and the body temperature will not be effectively controlled and decreased, but will gradually increase, resulting in poor antipyretic effect, and some serious patients may have high fever that does not subside, inducing the formation of lower respiratory tract infection and pneumonia, and causing obvious discomfort to patients. Some patients also need to use antipyretic drugs, which can lead to heavy sweating, and the use of electric blankets is not conducive to heat dissipation due to sweating, and there is a risk of electric leakage. Therefore, the use of electric blanket is not conducive to the relief and control of the disease, and may even lead to the deterioration of the disease.