Gastric ulcers are inflammatory defects that occur on the gastric mucosa, related to the gastric acid and digestive actions of gastric juices. Diagnosis mainly relies on clinical manifestations and auxiliary examinations, with typical symptoms including recurring or periodic upper abdominal pain that worsens after eating, as well as occurrences of belching. X-ray barium meal examinations can reveal filling defects, and gastroscopy can provide a full view of the ulcer. Treatment primarily involves the use of medications that suppress gastric acid secretion and protect the gastric mucosa. Additionally, it is important to enhance health education, eat less spicy and greasy food, have meals regularly and in measured amounts, and consume more green vegetables. (Specific medication use should be carried out under the guidance of a doctor.)