In addition, the hormone levels in the body change significantly in mid-pregnancy, and the progesterone levels are higher, and these hormones also antagonize the peristalsis of the gastrointestinal tract. The clinical manifestations include acid reflux, acid vomiting, heartburn and so on. Simple interventions can be made, such as eating a small and frequent diet to reduce gastrointestinal tract stimulation, and reducing the stimulation of sweets and carbonated beverages, including coffee and strong tea, which can lead to a further increase in stomach acid, so these diets should be avoided as much as possible. In addition, after eating or establish the patient should walk as much as possible to speed up the gastrointestinal peristalsis, so as to reduce the impact of stomach acid, the above are the causes of high stomach acid in the middle of pregnancy.