Pregnant women are a special group of people, acute gastroenteritis, it is recommended to consult a doctor in a timely manner, according to the condition of the pregnant woman to carry out reasonable treatment, and try to use drugs that have less impact on the fetus, in order to ensure the safety of mothers and babies. Common causes of acute gastroenteritis in pregnant women are divided into two cases, one is infectious acute gastroenteritis caused by bacterial, viral and parasitic infections, and the other is non-infectious acute gastroenteritis caused by food stimulation, accidental ingestion of toxic substances, food allergies and drug stimulation, etc., and the treatment is related to the severity of the disease. Treatment 1, light: light acute gastroenteritis is usually self-limiting, treatment should pay attention to dietary adjustments, it is advisable to eat a fluid diet that is easy to digest, a small number of meals, drink a lot of water, while avoiding the intake of unclean and spicy, irritating food. Often after being given rehydration fluids, light diet, the condition will gradually improve, the symptoms will be reduced; 2, heavy: If the patient’s symptoms are more serious, such as acute gastroenteritis after vomiting, diarrhea more frequently, accompanied by high fever, may lead to miscarriage or premature birth. This situation needs to go to the hospital in time, under the joint guidance of gastroenterologists and obstetricians and gynecologists, should avoid the use of drugs that have an impact on the fetus, such as amoxicillin, penicillin, etc. for treatment, and at the same time, should pay attention to rehydration regimen, so as to promote the rapid recovery of gastroenteritis. In addition, symptomatic treatment, such as stopping diarrhea, is needed. In the middle and late pregnancy, weighing the pros and cons and the fully informed consent of the pregnant woman, sometimes also choose other drugs that have a relatively small impact on the fetus, such as inhibiting gastric acid drugs, need to be fully communicated with the doctor.