Abstract：Objective Observe th laryngeal maesk sevoflurane inhaled anesthesia composite di linen in children below hilum surgery the clinical application effect. Methods Choose elective line 37 cases of children below hilum surgery.Age 1-5 years old, 8-23 kg weight, ASA Ⅰ-Ⅱ level, there are no respiration, circulation and disease of the nervous system. 6 h, the preoperative fast to drink 4 h, preoperative 30 min muscle note atropine. To sevoflurane after induction into the laryngeal mask, laryngeal mask inhaled 2-3% sevoflurane anesthesia, maintain after di tube into single 0.2% ROM pp improve. ROM. Pp 2.5 mg/reliability maximum dose kg. Can add 1/20 adrenaline extended time postoperative analgesia. Observe the anesthesia and surgery was effect of children of the reaction. Results Laryngeal mask the sevoflurane inhaled anesthesia composite di tube block, the application of surgery in children intraoperative after smoothly, anesthesia faster recovery, preoperative and postoperative fewer side effects.