Generally, ulcers larger than 2 cm need to be diagnosed by pathological biopsy to determine whether they are cancerous. Patients with gastric ulcer must pay attention to regular review of gastroscopy, but also need to actively find the causes of gastric ulcer, the more common causes are mainly irregular diet, H. pylori infection, mental stress or relatively large stimulation, long-term use of non-steroidal drugs, etc. can cause gastric ulcer. In the process of treating gastric ulcer, the cause must be cured, and if combined with H. pylori infection, H. pylori must be actively cured, otherwise gastric ulcer will still recur, and then there will be very serious complications or obstruction, cancer.