Doing pathology after gastroscopy is to take a piece of living tissue at the lesion tissue to make a pathological section, observe the section under the microscope, mainly observe whether the tissue has lesions, etc., for example, in the gastric sinus to take the necrotic tissue for pathological examination, whether atrophic gastritis exists in the place, if so, it should be actively treated, because the cancerous chances of atrophic gastritis is relatively large. If there is no atrophy, it is treated routinely. Take a piece of pathological tissue at the edge of the gastric ulcer to do pathological section examination, to determine whether the ulcer is benign or malignant, if it is benign, according to the regular treatment of gastric ulcer, if it is malignant, it should be treated with early surgical resection. If it is benign, it should be treated according to gastric ulcer; if it is malignant, it should be treated by early surgical resection.