Celiac disease usually does not directly cause gastric cancer, but left untreated it may develop into gastric precancerous lesions, which may eventually develop into gastric cancer. Gastric erosion is the erosion of gastric mucosa seen under gastroscope, and there are many causes of gastric erosion, such as H. pylori infection, alcohol abuse, use of non-steroidal drugs such as aspirin, stress, etc.. Among them, Helicobacter pylori infection is the main culprit of gastric cancer. Meanwhile, repeated or long-term gastric erosion without treatment will develop into chronic atrophic gastritis, resulting in gastric mucosa atrophy, metaplasia and heterozygous hyperplasia, etc., which is a pre-cancerous lesion of gastric cancer, and part of the patients with heterozygous hyperplasia may develop gastric cancer if not treated in time. If gastric erosion occurs, you should go to the hospital in time, improve the examination, clarify the cause of the disease, and intervene in the treatment according to the cause of the disease, so as to prevent the disease from further developing into gastric cancer.