During pregnancy, it is not recommended to use electric blankets for heating. Because electric blankets have electromagnetic radiation, it will affect the development of fetal tissues and organs, for example, it will easily cause abnormal development of fetal cell division and skeletal development defects after birth, and also cause abnormal development of fetal nervous system and heart and other organs. In the early stage of pregnancy, if pregnant women sleep on electric blankets for a long time, electromagnetic radiation will easily cause fetal brain cells to die, resulting in poor brain development and mental retardation after birth. Pregnant women need to stay away from electromagnetic radiation during pregnancy to avoid adverse effects on the fetus, if the winter weather is cold and needs to be warm, it is recommended that you can use air conditioning, if you need to use electric blankets, it is recommended to turn on the electric blanket before going to bed and turn off the power after the nest is warm, so as to avoid receiving electromagnetic radiation.