Pregnant women are forbidden to eat spoiled food, teratogenic drugs and alcohol. 1. Alcohol: Pregnant women should abstain from alcohol, the ethanol in alcohol will affect the development of the fetal nervous system, increase the chances of fetal malformation development, and also increase the chances of fetal miscarriage. 2. Spoiled food: do not eat spoiled food that has rotted and moldy after pregnancy, which may cause abdominal pain, diarrhea, food poisoning and other discomforts after consumption. 3. teratogenic drugs: medication during pregnancy is more cautious, some drugs prohibited during pregnancy should not be used, such as levofloxacin, chloramphenicol and so on. Pregnant women need to know in advance of the food and drugs prohibited, to avoid eating during pregnancy, to reduce the impact on the fetus.