After mobilizing alveolus, the compliance of mobilizing group increased clearly and the difference has its meaningful statistic in comparison with the group without mobilizing alveolus at the moments 3 minutes after mobilizing alveolus, the compliance of the mobilizing group was 51.5 ± 12.8 comparing with 29.6 ± 7.2, at the moment of 10 minutes the compliance of mobilizing group was 49.9 ± 11.2 comparing with 30.6 ± 8.1 at 'complications' group and at the moment of 20 minutes the compliance of mobilizing group was 45.0 ± 9.8 comparing with 31.6 ± 8.8 at' opposite' group.