The term polyp is derived from the French word meaning a swelling with multiple protrusions at one end and fixed at the other end at the mouth of an organ, formed by a bulge of mucosal and/or submucosal tissue. The digestive system is the preferred site for polyps, which can be found in the esophagus, stomach, gallbladder, small intestine, and large intestine, with the stomach, gallbladder, and large intestine being the most common. Since the 1970s, the detection rate of GI polyps has increased greatly due to the advancement of X-ray, ultrasound and endoscopic techniques. Most scholars believe that GI polyp is a disease with a high rate of malignant transformation and is one of the precancerous lesions. In particular, rectal polyps, gastric polyps and gallbladder polyps have a higher tendency to become malignant. Generally speaking, the malignant rate of polyps varies depending on the type of polyps. Non-neoplastic polyps are less likely to become cancerous, while neoplastic polyps are more likely to become cancerous; polyps without heterogeneous hyperplasia are almost not cancerous, while polyps with heterogeneous hyperplasia have a higher rate of cancer; multiple polyps, polyps larger than 2 cm, have a higher rate of malignancy if the disease lasts for more than two years; adenoid papillary or papillary adenomatous polyps have a high rate of malignancy. If the polyp has a high rate of malignancy, it needs to be removed promptly to eliminate future problems. In terms of treatment, experts believe that as long as the endoscopic examination can reach the site of the digestive tract, the polyp can be removed under the direct view of the endoscope trap or electrothermal, electrocoagulation removal, without dissection, and without removing the lesion of the stomach or intestine, the procedure is very simple and easy. Due to the introduction of laparoscopy and choledochoscopy, gallbladder polyps can also be removed under laparoscopy or choledochoscopy. In conclusion, with the above treatments, patients with GI polyps can not only eliminate the hidden danger of malignancy, but also relieve patients’ mental fears, so patients and their families should adopt a positive treatment attitude.