Anemia caused by gastric disease should be treated according to the cause of gastric disease. The causes of gastric disease include chronic atrophic gastritis, peptic ulcer, gastric cancer, etc. The primary disease should be treated first, and iron dextrose and folic acid can be given at the same time. 1. Chronic atrophic gastritis: due to chronic inflammatory changes in gastric mucosa, there is atrophy of glands in the lamina propria of gastric mucosa. Antibiotics such as amoxicillin, metronidazole, etc., proton pump inhibitors such as pantoprazole, omeprazole, etc. and bismuth such as bismuth potassium citrate, bismuth pectin, etc. can be used in combination therapy. 2. Peptic ulcer: in addition to the combined use of the above drugs, you can also use drugs to protect the gastric mucosa, such as aluminum-magnesium composite, teprenone and so on. Severe peptic ulcer can also be treated by surgery. 3. Gastric cancer: use proton pump inhibitors such as omeprazole and pantoprazole to inhibit gastric acid secretion and protect gastric mucosa. During chemotherapy, metoclopramide can be given to prevent nausea and vomiting. Early surgical treatment can eradicate gastric cancer. No matter which kind of anemia caused by gastric disease, in addition to treating the original disease, the elements needed for hematopoiesis should be supplemented, such as iron dextrose, ferrous fumarate, folic acid, vitamin B12, etc. In the case of severe anemia, the symptoms of anemia can also be improved by small amount of multiple transfusion of concentrated red blood cells. If anemia occurs, you should consult a doctor in time to clarify the cause of the disease and standardize the treatment. The above drugs should be used reasonably under the guidance of a doctor, avoid self-medication.