文章首先就航空器氧气改装、高原航线、座舱释压等做了定义的解释，其次对国航西南区域执行乌鲁木齐航线在一般高原航线和平原航线进行了对比和分析，总结氧气改装以后运行一般高原航段乌鲁木齐航线的优势，并分析目前国航机组在执行一般高原航段运行过程中申请直飞X18航路的优势所在，最后根据国航某日航班实际的运行情况为案例着重分析了22分钟化学氧气系统飞机在乌鲁木齐航线高原航段运行的运行控制方式。

At first, the paper explains the definition of the refit of the oxygen system, high altitude air route and cabin decompression. Then analysis the difference between the high altitude route and normal route that operating the Urumqi, make the conclusion of the advantage of the aircraft that equipped the refitted oxygen system operating high altitude air route in Urumqi area, and that using the X18 route. At last, analysis the operation control based on the situation of one day`s operation in the Urumqi area that done by the aircraft equipped the 22mins chemical oxygen system.