In general, late pregnancy with a night of electric mosquito liquid is not very harmful, but it is best to avoid long-term use, so as not to cause adverse effects on pregnant women and the fetus. Electric mosquito liquid contains toluene and other chemicals, through the role of electricity evaporation into the air, some harmful substances can be absorbed by the pregnant woman, through the placenta is absorbed by the fetus to affect the normal growth and development of the fetus, late in pregnancy, relatively speaking, the important organs of the fetus has been shaped, with a night of mosquito liquid usually has no significant impact, but should avoid long-term use. Pregnant women usually want to use as little as possible or do not use mosquito liquid, mosquito nets, electric mosquito swatters and other ways to prevent mosquitoes, pay attention not to contact with chemical substances, do not dye your hair, do nails, etc., so as not to affect the normal development of the fetus. During pregnancy, we should pay attention to regular maternity checkups to ensure the healthy growth of the fetus.