The common causes of acid reflux in pregnant women are abnormal hormone secretion and the stomach being squeezed and digestive function being affected. In early pregnancy, women’s body will secrete a large amount of progesterone and estrogen, these hormones will affect the function of the digestive system, resulting in the stomach and intestines can not digest and absorb food as soon as possible, so many women will have excessive secretion of stomach acid, which will then show the stomach acid reflux. As the fetus grows, the uterus of the pregnant woman will increase in size, which will squeeze the organs in the abdominal cavity and cause the position of the stomach and intestines to deviate, so digestion and absorption will also be affected. Especially in the second trimester, the amount of exercise is relatively reduced, the peristaltic speed of the intestine is slow, and the emptying function of the stomach is also reduced, so it will show acid reflux. If the symptoms of acid reflux are serious, you can use probiotics to regulate and eat small and frequent meals.