Wide-base intestinal polyp 4mm is a type of intestinal polyp, which means that the base of the intestinal polyp is very wide and large, and the base of the polyp is tightly connected to the intestinal wall and grows against the intestinal wall. Wide-base type intestinal polyps have a higher likelihood of becoming cancerous than those with a tibial or sub-tibial type of intestinal polyp. Therefore, for patients with 4mm diameter wide-based intestinal polyps, it is suggested that patients should be temporarily observed and have regular follow-up colonoscopy to understand the changes in the shape and size of the intestinal polyps, and endoscopic resection of intestinal polyps can also be performed. If the intestinal polyp is obviously enlarged, it is necessary to be alert to intestinal cancer, and it is recommended that the patient undergo endoscopic intestinal polyp resection treatment, and after the operation, carry out pathological examination to clarify whether the intestinal polyp is cancerous or not. Patients usually have discomfort, timely to the hospital for examination, do not be careless, so as not to delay the treatment, affecting the therapeutic effect.