Colonoscopic polyps treatment method mainly depends on the size of polyps: 1, polyp size <5mm: can be cold resection by trap; 2, polyp size <3mm: trap is not easy to remove, generally use biopsy forceps to remove; 3, polyps of 6-9mm and no tip: can be cold resection by trap; 4, polyps of 10-20mm no tip: recommended after submucosal injection, trap electrocoagulation electrosurgery; 5, polyp size >20mm with tip: need to be removed by ESD surgery as a whole; 6, polyps size >20mm with tip: need to use nylon rope, titanium clip to close the polyp root, lateral development; 6, polyp size >20mm with tip: need to be removed by ESD surgery as a whole. Polyp size >20mm without tip and lateral development: need to be removed by ESD surgery; 6. Polyp size >20mm with tip: need to remove the polyp root directly after using nylon rope and titanium clip to close it; if the root is small, submucosal injection of trap electrocoagulation and electrodesis can also be performed.