Gallbladder polyp is a general term for a type of lesion in which the wall of the gallbladder protrudes into the lumen in a polyp-like manner, including tumor polyp and non-tumor polyp. It is difficult to clarify its nature clinically and on imaging, also known as gallbladder mucosal augmentation lesions, and there are benign and malignant gallbladder polyps in the pathology, with benign polyps being more common. Benign gallbladder polyps include cholesterol polyps, inflammatory polyps, adenomatous polyps, adenomatous hyperplasia and tissue ectopic polyps. The causes of gallbladder polyps are complex and may be related to chronic cholecystitis, gallbladder stones and cholesterol metabolism disorders. In addition, obesity, smoking, hyperlipidemia, hyperinsulinemia and cirrhosis of the liver, abnormal physiological structure of the upper gastrointestinal tract and biliary tract are all factors that favor gallbladder polyps.