The cancer rate of single gallbladder polyp should be objectively analyzed according to the size, shape and location of gallbladder polyp: a. If the polyp volume is larger than 1cm, the polyp is located in the neck of gallbladder and the polyp surface is accompanied by obvious erosion, bleeding or cauliflower-like changes, the chance of cancerous polyp increases significantly, about 60% or more. If necessary, traditional open surgery can be performed to avoid laparoscopic removal of the tumor with residual tumor cells, which can be combined with chemotherapy treatment after surgery. Second, if the volume of gallbladder polyps is less than 1cm, the polyps are soft, and there is no obvious bleeding and diffuse changes on the surface, the chance of gallbladder polyps becoming cancerous is obviously low, less than 5%, so patients can be advised to observe closely and do not need to undergo surgery for the time being.