Electric blanket is an ideal heating product in winter, mainly used to raise the temperature in the blanket to achieve the purpose of warmth when sleeping, but also can be used to dehumidify the bedding. It is widely used because of its low power consumption, adjustable temperature, and ease of use. However, electric blankets are not suitable for everyone, and some people may have adverse reactions after using them. First, the possible side effects of using electric blanket: 1, electric blanket disease: the main manifestations are: first, sore throat, epistaxis, dry mouth, dry tongue, and constipation, urine less and yellow, etc. This is because the human body after a whole night electric blanket heating, skin capillary expansion, body water and salt loss increased significantly. The second is allergic dermatitis, which is due to the evaporation and drying of human moisture, but also due to the stimulation of the thermogenic body itself on the skin, so that some people have skin allergies, itching, or papules of different sizes on the body, scratching can appear after crusting and flaking, etc.. Patients with diabetes, kidney, liver, gallbladder and gastrointestinal disease are prone to such allergic dermatitis, the elderly, children, pregnant women are also prone to dermatitis. 2, electromagnetic wave radiation: electric blanket in the use of a large number of different wavelengths and frequencies of electromagnetic waves released, forming a kind of electronic fog. This kind of electron fog is filled in the space, which is something invisible, untouchable and unsmellable, and it is easy to cause human physiological dysfunction, which leads to headache, insomnia, forgetfulness, female endocrine disorder, pregnant women miscarriage, fetal stunting and other symptoms. Newborns, infants and children’s tissues and organs are more fragile, and the electromagnetic waves generated by electric blankets will hinder their growth and development. 3, temperature and humidity changes: the use of electric blankets, the humidity inside the nest will drop. Anyone suffering from bronchitis, bronchitis, emphysema and asthma, if often use electric blanket, easy to cause respiratory dryness, so that the cilia function is weakened, thus aggravating the disease. Because the use of electric blanket will speed up the blood circulation and make the blood vessels dilate, thus aggravating the bleeding phenomenon, so patients with stomach bleeding, tuberculosis hemoptysis, ulcer bleeding and cerebral hemorrhage should not use electric blanket. Because the electric blanket is a mechanical warming, it will destroy the balance mechanism of human body, promote blood pressure warming, increase blood viscosity, and make myocardial infarction and cerebral hemorrhage easily, so patients with cardiovascular diseases such as hyperlipidemia, hypertension, atherosclerosis, coronary heart disease and cerebral thrombosis should not use electric blanket all night. The high temperature generated by electric blankets will reduce the function of testicular sperm production, so couples who want to have a healthy baby should not use them. Second, the use of electric blankets must pay attention to the following matters: 1, electric blankets should not be in direct contact with the human body. Lay a blanket or bed sheet on top. 2. Do not put the electric blanket on the metal or hard objects with sharp protrusions. 3, electric blanket must be cut off when not in use, to prevent accidents. 4.Avoid repeated folding in the same position to prevent the electric heating wire from breaking due to folding and causing fire. If the “not hot” phenomenon occurs due to long use, send it to the manufacturer for repair. 5, the time of power on should not be too long, generally is the power heating before going to bed, turn off the power when going to sleep, in any case can not be used overnight. 6, frequent users of electric blankets, should increase the amount of water.