The painless colonoscopy report includes basic information about the examiner, examination items, what was seen, pathological diagnosis and microscopic diagnosis. What is seen: It is what the doctor sees in the colon, ileocecal region, rectum and anal canal under the colonoscope. Common microscopic diagnosis: ischemic enteritis, ulcerative colitis, intestinal tuberculosis, colonic polyps, colonic hyperplastic masses, colonic diverticula, colonic air sac tumors, etc. 1. Ischemic enteritis: if it is transient type, the mucosa under endoscopy shows congestion, edema, erosion, etc., and biopsy is needed; if it is stricture type, it is generally difficult to pass through colonoscopy, and further examination is needed to distinguish it from colonic stricture caused by cancer; 2. Ulcerative colitis: pathological biopsy is often needed to clarify the diagnosis and determine whether there is cancer. After diagnosis, take medication as prescribed by the doctor and follow up regularly. Pay attention to regular diet, do not overeat, avoid cold, spicy and stimulating food, eat more easily digestible food, pay attention to rest and emotional regulation; 3, intestinal tuberculosis: ulcers and stenotic lesions are seen, and caseous granulomas are seen on pathological examination, which should be combined with relevant tests for tuberculosis. After diagnosis, anti-tuberculosis treatment is needed; 4, colon polyps: pathological biopsy is needed to confirm the diagnosis, endoscopic polypectomy is feasible. Postoperative pathology will clarify the nature and stage of polyps and whether they are completely removed to determine the next treatment or follow-up strategy; 5. colonic hyperplastic masses: pathological biopsy is needed to clarify their nature and guide the next treatment in conjunction with pathological reports; 6. colonic diverticula: generally found in the ascending colon, cecum and sigmoid colon, mostly multiple. Generally do not need treatment. If there is gastrointestinal bleeding when the effect of medical treatment is not good, surgical treatment is required; 7, colonic balloon tumors: mostly seen in the sigmoid colon, lesions are cystic, transparent, can be further biopsy and polyps to identify.