Gastric fundal polyp 0.4×0.4cm is a relatively small polyp, if there is no obvious discomfort symptoms, patients may not undergo surgical treatment. Fundal polyps are gastric polyps that occur at the bottom of the stomach, and their causes may be related to improper diet, chronic inflammation, bile reflux gastritis, etc. If the size of a fundal polyp is 0.4×0.4cm, the patient may not undergo surgery. If the size of the gastric fundus polyp is 0.4×0.4cm and the shape of the gastric polyp is full and smooth with regularity, and there are no ulcers around it, most of such cases are benign polyps, which can be treated without surgery, and can be reviewed regularly. If the local mucous membrane of the gastric fundus polyp breaks down, combined with gastrointestinal bleeding, while the polyp continues to get bigger, and the patient is accompanied by epigastric pain, acid reflux, heartburn and other symptoms, the patient needs to be further examined, and according to the patient’s own condition, endoscopic treatment or surgery under the operation of the doctor to remove the polyp to avoid further malignant changes.