The paper deals with the construction and performance of a newly developed rolling piston type compressor for automotive air conditioning system. Both experimental results and some of considerations.The automotive compressor is one of the most important element in an automotive air conditioner and requires the following characteristics … (1) Low power consumption at high speed driving. (2) High cooling efficiency especially at low speed driving or idling. (3) Compact size and lightweight mechanism. (4) Quiet operation (Low level noise and vibration). (5) High reliability. (6) Lower cost.A rolling piston type compressor has been developed in compliance with the above requirements.It is found that this rolling piston type compressor is very suitable for application to an automotive air conditioning system.