The exact time for cancerous gastric fundus polyps to develop is related to the type of polyp and individual differences; some patients will not develop cancer, while some patients may develop cancer over years or decades. Whether or not fundal polyps become cancerous is related to the type of polyp. There are two common types of polyps, one is adenomatous polyp, which has atypical hyperplasia and belongs to a kind of pre-cancerous lesion with a high probability of becoming cancerous, and the patient should have a biopsy to check the type of polyp, and then surgically remove the polyp if necessary. If it is not treated in time, it is likely to become cancerous, and the cancerous time is about 3-10 years. In addition, for inflammatory polyps rarely have abnormal proliferation, the probability of cancer is very low, and generally will not be transformed into cancer. It is recommended that people with stomach discomfort, acid reflux and flatulence, or those who have overeating, irregular lifestyle and do not pay attention to dietary hygiene should go to the hospital for gastroscopy regularly. If there are gastric polyps, remove the lesions in time to prevent cancer; at the same time, pay attention to eating healthy, get up early and go to bed early.