目的：探讨分析俯卧位机械通气应用于重症肺炎治疗的疗效及安全性。方法：对2013年1月-2015年1月我院收治的78例重症肺炎患者的临床资料进行回顾性调查分析，随机分成两组，每组39例，对照组行常规仰卧位机械通气，采取保护性通气模式；观察组行俯卧位机械通气，同样采用保护性通气模式，对比分析两组患者治疗后一天内不同时段的动脉血气分析、氧合参数及呼吸机参数的变化，并在治疗后复查胸片观察肺部炎症变化情况。结果：观察组治疗有效率为83.7％，远高于对照组的56.7％。两组有效率差异显著，具有统计学意义（P<0.05）。与对照组相比，观察组PaO2和PaO2/FiO2变化差异有统计学意义，1周后胸片肺部炎症吸收明显改善(P＜0.05)。结论：俯卧位机械通气应用于重症肺炎患者治疗效果较令人满意，值得广泛推广。“,”Objective:To investigate the analysis of mechanical ventilation in the prone position applied to the treatment of severe pneumonia, efficacy and safety. Methods:The clinical data of 78 cases of patients with severe pneumonia in January 2013 January 2015 in our hospital were retrospectively analyzed survey were randomly divided into two groups of 39 patients in the control group underwent conventional mechanical ventilation in supine position to take observation group underwent mechanical ventilation in the prone position, the same protective ventilation mode, comparative analysis of two groups of patients after a day at different times of arterial blood gas analysis, changes in oxygenation parameters and ventilator parameters, and after treatment;protective ventilation mode chest radiographs were observed changes in lung inflammation. Results:The effective rate was 83.7%, much higher than 56.7%. Significant differences between the two groups efficiently, with statistical significance (P<0.05). Compared with the control group, the study group PaO2 and PaO2/FiO2 change significantly, one week after the chest X-ray absorption of lung inflammation significantly improved (P<0.05). Conclusion:The prone position mechanical ventilation used in the treatment of patients with severe pneumonia compared with satisfactory results, should be popularized.