Acid inside the patient’s mouth indicates a bad stomach, digestive system problems may easily lead to acid reflux, reflux of gastric acid will stimulate the patient’s throat mucosa, resulting in foreign body sensation, burning sensation, and even ulcer formation, it is recommended that the patient is best to check a gastroscopy to clarify the diagnosis, and then actively apply drugs to control. Patients can take oral morpholine, which can effectively enhance gastric power, and then take oral omeprazole enteric capsules to inhibit the secretion of gastric acid, while chewing Daxil after meals to neutralize gastric acid and reduce the situation of acidity inside the mouth. Observe the changes in the patient’s condition for about half a month with symptomatic treatment, and if the acid still comes out, you need to go to the hospital for further consultation.