The invention relates to the technical field of a compressor, and in particular relates to a rotary compressor. The compressor structurally comprises a pump body, a motor for driving the pump body through a rotating shaft, and a shell, wherein the pump body comprises an upper bearing, a lower bearing and a plurality of cylinder components; the cylinder components comprise a cylinder body which forms a compression chamber with the upper and lower bearings, and a slider and a piston which are corresponding to the cylinder body; one side of the upper bearing, facing to the compression chamber, is provided with an insulating plate made of low hear conduction material, and/or one side of the lower bearing, facing to the compression chamber, is provided with an insulating plate made of low hear conduction material, and/or the inner wall side of the cylinder body is provided with an annular insulating plate made of low hear conduction material. The invention provides the rotary compressor capable of not only ensuring the compression performance ratio, but also reducing the cost.