The causes of high stomach acid after cholecystectomy may be bile reflux and indigestion. 1. Bile reflux: usually after cholecystectomy, due to gastrointestinal autonomic nerve dysfunction, bile may flow back into the stomach, resulting in bile reflux, which leads to symptoms such as epigastric discomfort, flatulence, fever, acid reflux, nausea and vomiting. 2. Indigestion: Generally after cholecystectomy, the ability of bile to emulsify fat will be weakened, and the digestive ability will also be weakened to a certain extent, leading to indigestion of the patient, which will cause an increase in stomach acid. There are many other reasons for more stomach acid after cholecystectomy, so we recommend that patients actively seek medical attention and not blindly use medication to avoid adverse consequences.