Cardia polyps may become cancerous, but there is no data to support that they are prone to cancer. Cardia polyp is a polyp in the mucous membrane of cardia, and the cause of its development may be related to dietary factors, inflammatory stimulation, and genetic factors to a certain extent. In the early stage, there are usually no obvious symptoms, and when the polyp is too large, the patient may have symptoms such as choking on food and pain. However, cardia polyps in the gastric mucosa may have the risk of cancer as the condition progresses, especially in patients with too many polyps or large polyps, such as adenomatous polyps, which have a higher risk of cancer. In addition, it is recommended that patients with cardia polyps should go to the hospital in time and follow the doctor’s instructions for treatment to avoid further development of the polyps.