Objective To observe and compare the anesthesia effect of propofol combined with midazolam used in the bronchoscopes and the removal of children's intratraeheal foreign body.Methods 60 patients in hospital were choser to do the operation of bronchoscopes and the removal of children's intratracheal foreign body,the patients of selective operation were randomized into K group(n=30)related to midazolam-ketamine and P group(n=30)related to midazolam-propofol.The patients were respectively injected midazolam slowly given in a dose of 0.1～0.15mg/kg,and then offer oxygen 5～10 minutes with a face mask.After that the patients in group K were injected ketamine slowly in the dose of 2mg/kg,and 1～2mg/kg after laying the bronchoscope according as ease.The patients in group P were injected propofol slowly in the dose of 2mg/kg also,add 1～2mg/kg according as case.Observing the patients' BP,HR,SpO2,RR and if or not holding breath,bucking,postoperation laryngeal edema,glossocoma at the different periods:preoperation,laying the bronehoscope,during the operation and after the operation.Results To compare the two groups,the MAP,HR of group P are lower obviously than group K before and after laying the bmnchoscope(P＜0.05).The HR,MAP of groug P descended significantly after laying bronchoscope(P＜0.05),while the HR fluctuate little but MAP ascend significantly in the group K(P＜0.05).After laying bronchoscope the RR descend significantly than that when patients entered operation room(P＜0.05),and also lower than that ofgroup K(P＜0.05).The SpO2 in the two groups have no difference.The complications as holding breath,postoperative glossocema,laryngeal edema,holding breath during reviving time,in the group K happened at a high rate than the group P(P＜0.05),the awaking time is also longer in the former(P＜0.05).Conclusion The anesthesia effect of midazolam-propofol is superior to that of midazdam-ketamine in the removal of children's intratraeheal foreign body.