Comparison of epidemiological characteristics, resulting changes in hemodynamic, respiration status, and complications between the two groups is carried out. Results: Two groups are relatively similar in characters but the time of inserting LMA was faster than ET (14.93 ± 6.06 seconds vs 26.11± 13.47seconds; p<0.001), the time of removing LMA was shorter than ET after surgery (6.84 ± 3.06 minutes vs 22.66 ± 6.27 minutes; p< 0.001).