目的：探讨利多卡因表面麻醉在急诊气管插管中的应用价值。方法选取40例急诊各种原因呼吸衰竭急需气管插管呼吸支持的患者，随机分为两组：利多卡因组（L组），对照组（C组），两组年龄、体重及性别比较差异无统计学意义。L组在插管前给予2%利多卡因喷于咽喉部，随之常规插管；C组常规插管。比较两组的插管时间、氧饱和度的最低值。结果 L组插管时间明显短于C组，氧饱和度最低值明显高于C组，差异均有统计学意义。结论对于有自主呼吸患者需急诊气管插管者，应用利多卡因表面麻醉后可明显缩短插管时间，增加插管安全性，从而提高救治成功率。“,”Objective Investigate the value of surface anesthesia with lidocaine in emergency tracheal intubation. Methods Selected 40 patients of emergency respiratory failure in urgent need of endotracheal intubation with respiratory support for various reasons . Randomly divided into 2 groups:Lidocaine group (group L), The control group (group C), The age, weight and gender dif erences of two groups have no statistical significance. 2%lidocaine was sprayed in the throat before intubation in L group, and than was be with the conventional intubation;Wich was be with conventional intubation in group C.To compare the intubation time and the lowest oxygen saturation of two groups. Results The intubation time of group L was significantly shorter than that of group C, The lowest oxygen saturation of group L was obviously higher than that of group C, The dif erences were statistical y significant. Conclusion For the patients with spontaneous breathing need emergency tracheal intubation, The intubation time can be obviously shorten by the surface anesthesia with lidocaine, The security of intubation was increased, Than the successful rate was improved.