When diarrhea occurs in late pregnancy, it is important not to cause premature delivery, as pregnancy itself rarely causes diarrhea and does not aggravate existing diarrhea. It is important to know what causes the diarrhea and whether there is any contact with unclean food. If it is not an infection, there is no need to take medication, but you should pay attention to dietary hygiene. The main medications that can be used for diarrhea in pregnant women are micro-ecological preparations such as Simethicone, Lizudra, Rectify, and Lactase. Once diarrhea occurs in a pregnant woman, the main treatment is proper rehydration, replenishment of water and electrolytes lost due to diarrhea, especially potassium ions, replenishment of calories lost due to diarrhea, and close observation of changes in the condition of the fetus. There are no signs of premature birth or miscarriage, and unlike regular people, pregnant women should be especially careful when using antibiotics, a variety of commonly used antibiotics and antiprotozoal drugs, in addition to adverse reactions, many of them have potentially teratogenic effects.