Pregnant women are advised not to sleep on electric blankets. As electric blankets are close to the body of a pregnant woman, and the constant high temperature of electric blankets will deteriorate the proteins of the embryo, which will pose a threat to the fetus in the womb. Therefore, women who use electric blankets in the first three months of pregnancy have a higher rate of miscarriage. For the healthy growth and development of the fetus in the abdomen in winter, it is best not to use electric blankets for warmth, but use air conditioners, electric heaters, or put hot water bags on your feet when you sleep to warm up, which are safer and will not affect the fetus and the health of the pregnant woman. In addition, electric blankets are very radioactive to the human body, capable of causing neurological disorders, reproductive disorders, cardiovascular disorders, immune function and eye vision. People who are often exposed to electromagnetic radiation are prone to leukemia and tumors in the brain. Secondly, the electromagnetic field will affect the cell division of the fetus in the abdomen, and the high temperature of heat in the early stage of pregnancy may lead to the death of fetal brain cells and affect the development of the brain. And prolonged use of electric blankets may also lead to miscarriage in pregnant women, so it is best not to use electric blankets.