Generally speaking, the chance of gastric polyps becoming cancerous is not more than 5%, but if atypical hyperplasia occurs or the size is large, the chance of cancerous transformation can be increased. 1. If the size of gastric polyp is small and the patient does not have obvious symptoms, clinical observation or gastroscopic biopsy can be carried out, and if no abnormality is found in the pathological results, the chance of cancerous transformation generally does not exceed 5%. 2. If the size of gastric polyp is large and hyperplasia occurs, surgical resection should be carried out as soon as possible. Pathologic results showing atypical hyperplasia of different degrees suggest precancerous lesions with high risk of cancer, which should be closely followed up to prevent cancerous lesions. If the examination result suggests gastric polyps, it is necessary to consult a doctor in time and intervene under the doctor’s guidance to avoid delaying the condition.