Pregnant women sitting for two hours containing formaldehyde new car is a certain harm, the specific harm can not be generalized. Pregnant women in the first trimester of pregnancy, because it is the golden period of embryonic development, at this time, if pregnant women are affected by a variety of adverse factors, may lead to fetal malformations, preeclampsia and other possibilities. New cars may contain formaldehyde, pregnant women who sit for a long time in a new car containing formaldehyde, it is very easy to inhale an excessive amount of formaldehyde. After inhaling formaldehyde, it is very likely to lead to nausea, vomiting, and aggravate the early pregnancy reaction. Lead to fetal development deformities, preeclampsia, preterm labor and other possibilities. Therefore, pregnant women sitting for two hours in a new car inhalation of formaldehyde is a certain harm, but it is not absolute. Pregnant women should not be too nervous. If you can avoid try not to sit too long in the new car containing formaldehyde, if at any time there is special discomfort to seek medical attention as soon as possible.