Gastrointestinal polyps are protruding papillae on the mucosal surface of the gastrointestinal tract that are often asymptomatic when small and are usually discovered incidentally during barium gastrointestinal imaging, gastroscopy, or surgery for other reasons. The name “polyp” usually refers only to a bulge observed by the naked eye. In the early stages or in the absence of complications, there are usually no clinical symptoms. When symptoms are present, they often manifest as vague epigastric pain, abdominal distention, discomfort, and rarely, nausea and vomiting. In combination with erosions or ulcers, there may be gastrointestinal bleeding, mostly in the form of a positive fecal occult blood test or black stool, but vomiting blood is less common. Polyps with tips located in the pylorus may dislodge into the pyloric duct or duodenum and pyloric obstruction may occur. Polyps growing near the cardia may have dysphagia. Pathologically, common polyps can be classified as hyperplastic polyps, inflammatory polyps, and villous-tubular adenomatous polyps. Generally, inflammatory polyps are caused by inflammation and may eliminate on their own with the elimination of inflammation; hyperplastic polyps have a certain rate of malignancy, but the malignancy rate is low and can be temporarily observed, but minimally invasive resection is recommended for polyps over 1 cm; and tubular, villous, or tubular-villous adenomas have a high rate of malignancy and are recommended to be removed as soon as they are detected. Minimally invasive resection via endoscopy is the preferred method for the treatment of gastrointestinal polyps.