There is a difference in the medication for gastritis and gastric ulcer. If there is no clinical symptom of gastritis, you can observe it first and usually pay attention to regular meals and rest. If clinical symptoms of indigestion appear, acid suppressants combined with drugs to help digestion, such as oral omeprazole plus domperidone, can be given as appropriate. The treatment of gastric ulcer is relatively strict, and regular treatment is required regardless of the presence or absence of clinical symptoms. Generally, acid-suppressing drugs combined with gastric mucosal protective agents, such as omeprazole plus bismuth plus rehabilitation new liquid, are chosen to promote ulcer repair, etc. In addition, both gastritis and gastric ulcer are recommended to perfect C13 or C14 breath test to know whether H. pylori infection is present. If HP infection is present, H. pylori eradication therapy needs to be given under the guidance of a gastroenterologist, as appropriate.