针对1.6 m3螺杆空压机的理论计算、结构设计、试验验证等方面介绍城轨车用螺杆空压机主机的研制情况。该型主机选用了针对城轨车工况用专门研发具有自主知识产权的南口型线,试验证明该款主机的效率接近国际同类产品的水平。 Aiming at the theoretical calculation, structural design and test verification of 1.6 m3 screw air compressor, this paper introduces the development of the mainframe of the air compressor for the city rail screw compressor. The type of host selected for the urban rail car operating conditions with specialized research and development with independent intellectual property rights of the South mouth line, the test proved that the efficiency of the host close to the level of similar international products.