虽然目前有许多治疗儿童声门下狭窄的方法，但疗效仍不理想，为了解决此难题，本文作者对兔行环气管部分切除术，并对术后气管管腔的大小，术后愈合情况，体重变化及喉气管吻合口形成情况进行观察，并与对照组及尸检小儿喉标本进行比较分析，得出以下结论：小于４岁的儿童声门 Although there are many ways to treat subglottic stenosis in children, the curative effect is still not satisfactory. To solve this problem, the author of this study performed a partial resection of the ring trachea in rabbits and compared the size of postoperative tracheal lumen, postoperative healing, body weight Changes and the formation of laryngotracheal anastomosis was observed and compared with the control group and autopsy pediatric laryngeal specimens were compared and concluded the following conclusions: Children under 4 years of glottis