Acid reflux is caused by gastroesophageal reflux and can be relieved by taking acid suppressants, gastrointestinal stimulants and antacids. 1. Acid-suppressing drugs: clinically used proton pump drugs, such as omeprazole, rabeprazole, etc. Its role is to inhibit the proton pump on the gastric mucosa, thus reducing the secretion of gastric acid, the effect is strong, efficacy is significant, is the first choice for the treatment of gastric reflux drugs. 2. Gastrointestinal dynamics drugs: commonly used in the clinic are domperidone, mosapride, trimethoprim maleate tablets, etc. Such drugs can promote gastrointestinal peristalsis, accelerate gastrointestinal emptying, thereby improving gastrointestinal reflux. 3. Antacids: Sodium bicarbonate and aluminum hydroxide are commonly used in mild cases of gastric reflux to temporarily relieve symptoms. All of the above drugs should be taken under the guidance of a clinician, and should not be used on their own to avoid adverse reactions.