Drinking beer while pregnant is prohibited and may lead to fetal malformations, which may affect fetal development or even miscarriage. 1. Causing fetal deformities: Long-term consumption of beer by pregnant women may cause fetal deformities, increasing the risk of cleft lip, small head, small eyes and other deformities. 2. Impact on fetal development: after drinking beer, alcohol into the bloodstream of pregnant women can be absorbed by the fetus through the blood circulation through the placenta, which will produce different degrees of toxic effects on the fetus, and at the same time, it will lead to vasoconstriction of the placenta, affecting the blood supply of the fetus, resulting in slowing down the development of the fetus, affecting the development of the fetus’s intelligence. 3. Lead to miscarriage: Excessive consumption of alcohol may lead to miscarriage of the fetus. Therefore, it is forbidden to drink food containing alcohol when you are pregnant.