When women drink alcohol during pregnancy, in addition to harming their health, alcohol can also affect the development of the fetus through blood circulation. Alcohol can harm the function of the gastrointestinal tract, liver and nerves. Pregnant women have a sensitive gastrointestinal tract, and drinking alcohol can aggravate early pregnancy reactions. Pregnant women with chronic alcohol abuse are significantly more likely to develop gastric ulcers, stomach cancer and cirrhosis of the liver. Alcohol can pass through the placenta to the fetus, which can lead to fetal growth retardation, malformation and miscarriage. In addition, alcohol can inhibit the absorption of folic acid and vitamin B, leading to anemia and increased incidence of fetal neural tube abnormalities. To ensure the healthy development of yourself and your fetus during pregnancy, in addition to not drinking alcohol, you should avoid smoking or second-hand smoke. It is important to avoid going to crowded places, prevent colds and flu, and avoid taking drugs at will.