Pregnant stomach grumbling, always exhaust for the following reasons: first, is the body hormones will rise after pregnancy, the secretion of gastric acid will be reduced, affecting the digestive capacity of the stomach, will make pregnant women feel bloated in the abdomen; second, the reason is that with the prolongation of pregnancy, the fetus continues to develop, the uterus will also increase, then the uterus will press the digestive organs, making the space of the intestines and stomach smaller and smaller, increasing the workload of the intestines and stomach The workload of the stomach and intestines, eaten food for a long time in the intestines and stomach, generating a lot of gas; third, is that women in pregnancy will correspondingly reduce the amount of activity, coupled with the intake of more and richer nutrition, more unfavorable to digestion, easily caused by flatulence; fourth, is the preference of the diet structure, such as the preference to eat beans, sweet potatoes and other foods that are prone to flatulence.