Pregnant women can drink lactobacillus in moderation, but should not drink too much. Lactobacillus is an essential and important physiological function flora in human body, which is widely existed in human intestine. It can regulate the normal flora of the gastrointestinal tract, maintain the micro-ecological balance, improve the function of the gastrointestinal tract, improve the digestibility and bioefficiency of food, reduce serum cholesterol, control endotoxins, inhibit the growth of spoilage bacteria in the intestinal tract, improve the immunity of the body, etc. It can also be used in the auxiliary treatment of diarrhea and constipation, so moderate drinking is beneficial to health. In addition, lactic acid beverages often contain more sugar, and if consumed excessively, it can lead to an increase in blood sugar of pregnant women and even cause gestational diabetes. High blood sugar can also stimulate the fetus to secrete insulin, resulting in a large fetus or even a huge baby, which can significantly increase the risk of difficult labor and cesarean delivery. During pregnancy, pregnant women should eat a nutritious and easily digestible diet, avoid spicy and stimulating and cold foods, eat more fresh vegetables, exercise in moderation and control their weight during pregnancy to help with delivery. It is also important to pay attention to regular medical checkups and go to the hospital if there are abnormalities, such as abdominal pain and vaginal bleeding.