Polyp is generally refers to the superfluous organisms growing on the mucosal surface, its cause is not very clear, and is not caused by a single factor, may be related to the following factors: 1, congenital genetic factors or genetic mutations. Some polyps have a family history, such as multiple intestinal polyps, multiple polyposis of the gallbladder, etc. Most of the patients’ parents or family members have the same lesions. 2, poor dietary habits. Often eat too hard food or spicy irritating food, will produce adverse stimulation of the gastrointestinal mucosa, and will cause changes in the nature of the stool, the intestinal mucosa stimulation, easy to cause the gastrointestinal mucosa restricted hyperplasia, thus forming polyps. 3, chronic inflammatory stimulation. Due to the chronic stimulation of inflammatory factors such as macrophages, it will cause excessive proliferation of granulation tissue or fibrous tissue of the mucosa, thus forming polyps. Most polyps occur in the gastrointestinal tract and gallbladder and other parts of the body, are benign lesions, but there is also the possibility of malignant transformation, to be examined and treated as soon as possible.