Adenoid hypertrophy surgery is usually performed by endoscopic guidance for adenoidectomy. Adenoidectomy is divided into the following periods: 1, the earliest use of adenoids scraping knife, belongs to the blind scraping, the advantage is simple operation, the disadvantage is not clean scraping, adenoids are prone to re-growth; 2, now can be under the direct view of the endoscope with a cutter to remove adenoids, does not belong to the blind scraping, the gland can be cut clean, but also can deal with other symptoms caused by adenoids, such as skull base mucosa; 3, plasma surgery, the advantage is no bleeding or The surgery can be completed with very little bleeding.