Taking stomach pills and spitting acid may be functional dyspepsia, acute and chronic gastritis, pyloric tube inflammation and edema, reflux esophagitis, etc., and should be promptly diagnosed to identify the cause of the disease. 1. Functional dyspepsia: Functional dyspepsia is caused by gastric and duodenal dysfunction, there will be fullness after meals, pain in the upper and middle abdomen, etc., when the abdominal fullness is serious, it will cause acid reflux after taking gastric pills. 2. Acute and chronic gastritis: in patients with gastritis, most will have epigastric fullness, belching, acid reflux and other symptoms, mainly gastric mucosal damage to the smooth muscle function of the stomach is affected, peristalsis and slow emptying, food is easy to stay in the stomach the probability of acid reflux is greatly increased. 3. Inflammation and edema of the pyloric duct: it leads to narrowing of the duct, retention of digested food in the stomach, increased secretion of gastric acid, increasing the volume of gastric content and pressure, and once the abdominal pressure increases, such as exertion, bending over, etc., the symptoms of acid reflux are easy to appear. 4. Reflux esophagitis: the main cause is the weakening of anti-reflux barrier, esophageal clearance and esophageal mucosal barrier. Typical symptoms are heartburn, heartburn, acid reflux and so on. If you take stomach pills and spit up acid, it is recommended that the patient consult a doctor in a timely manner, so that the doctor can clarify the cause of the disease and give targeted treatment.