Gastric mucosal damage is usually caused by acute and chronic gastritis, gastric ulcer, etc. It may be caused by increased secretion of gastric acid, or by eating spicy and irritating food, stimulated by tobacco and alcohol, irregular diet, and eating food that is not easily digested. You can eat drugs that neutralize gastric acid, reduce gastric acid secretion and protect the gastric mucosa, such as omeprazole capsules, colloidal bismuth subcitrate, aluminum sulfate gel, aluminum hydroxide tablets, cimetidine, ranitidine, etc. There are ulcers, H. pylori infection can be eaten at the same time amoxicillin capsules, azithromycin, clarithromycin and other drugs, pay attention to the regular diet.