The utility model provides a side direction exhaust compressor exhaust casing. The utility model relates to a compressor exhaust casing, concretely relates to side direction exhaust compressor exhaust casing. The utility model discloses a solve the axial dimensions overlength that current axial exhaust arouses, the factory building space utilizes unreasonablely, and the exhaust side drive is difficult to realize, exhaust side bearing arrangement space is not enough and the big problem of compressor exhaust loss. A side direction exhaust compressor exhaust casing includes on the compressor exhaust casing front portion under halfbody, the compressor exhaust casing front portion on halfbody, the compressor exhaust casing rear portion under halfbody, the compressor exhaust casing rear portion halfbody and two exhaust casing rear ends seal, on the compressor exhaust casing front portion under halfbody and the compressor exhaust casing front portion halfbody symmetry set up, on the compressor exhaust casing rear portion under halfbody and the compressor exhaust casing rear portion halfbody symmetry set up, on the compressor exhaust casing rear portion under halfbody and the compressor exhaust casing rear portion on the rear end face of halfbody respectively with the perpendicular rigid coupling of one end of exhaust casing rear end. The utility model is used for the compressor set cylinder.