Abstract: The present invention relates to a compressor, which has a bolt-cooling part formed between a suction chamber and a bolt fastening hole formed at a position, where the suction chamber and a discharge chamber of a housing are partitioned from each other, for allowing for a flow of refrigerant toward the bolt fastening hole to reduce an influence of temperature of discharged refrigerant, thereby preventing loosening of a bolt due to a thermal expansion, and improving durability.