Electric blankets are commonly used electrical appliances in winter homes. In winter, the room temperature is low, the elderly, children, women use electric blankets. 1, patients with inhalation diseases where suffering from bronchitis, bronchitis, emphysema and asthma can not use electric blankets in winter, if often use electric blankets, easy to cause dry throat, hoarse voice, coughing, which aggravates the condition. 2.Patients with cardiovascular diseases suffering from hypertension, arteriosclerosis, hyperglycemia, coronary heart disease and cerebral thrombosis, etc., because the electric blanket is mechanical warming, which can destroy the body’s equilibrium mechanism and increase blood pressure, making it easy to make myocardial ischemia and stroke attack. The use of electric blankets for patients with hemorrhagic diseases can accelerate blood circulation and vasodilation, thus aggravating bleeding. Therefore, patients with various bleeding diseases should use it with caution. 3.Patients with allergic constitution who suffer from stomatitis, chronic pharyngitis, laryngitis, mouth ulcers and itchy skin, rashes and other diseases should not use electric blankets. 4.Newborns and infants have poor thermoregulation ability, and electric blankets can easily produce high temperature. 5.Men of childbearing age Because the high temperature generated by electric blanket will affect the ability of testicles to produce sperm, so newlywed couples who want to be eugenic should not use it. 6.Pregnant women The electric blanket will generate magnetic field, which can directly affect the normal development of the fetus through pregnant women, and can lead to miscarriage or fetal malformation in serious cases.