A compressor comprising: a casing having a tubular shape; a compression mechanism arranged near one end of the casing in the casing to compress a gas; a motor arranged near another end of the casing in the casing to drive the compression mechanism ; a suction pipe opening between the compression mechanism and the motor in the casing ; a gas flow path formed between the motor and an inner peripheral surface of the casing and allowing an internal region of the casing near one axial end of the motor and another internal region of the casing near another axial end of the motor to communicate with each other; and a gas guide facing an open end of the suction pipe in the casing , the gas guide including: a first flow path configured to guide a portion of a gas that has passed through the suction pipe toward the compression mechanism ; and a second flow path configured to guide a remaining portion of the gas that has passed through the suction pipe toward the gas flow path , characterized in that the second flow path includes: a tapered portion having a flow path cross-sectional area that decreases toward an outlet of the second flow path ; and a reverse tapered portion being closer to the outlet of the second flow path than the tapered portion is, the reverse tapered portion having a flow path cross-sectional area that increases toward the outlet of the second flow path . a casing having a tubular shape; a compression mechanism arranged near one end of the casing in the casing to compress a gas; a motor arranged near another end of the casing in the casing to drive the compression mechanism ; a suction pipe opening between the compression mechanism and the motor in the casing ; a gas flow path formed between the motor and an inner peripheral surface of the casing and allowing an internal region of the casing near one axial end of the motor and another internal region of the casing near another axial end of the motor to communicate with each other; and a gas guide facing an open end of the suction pipe in the casing , the gas guide including: a first flow path configured to guide a portion of a gas that has passed through the suction pipe toward the compression mechanism ; and a second flow path configured to guide a remaining portion of the gas that has passed through the suction pipe toward the gas flow path , characterized in that a first flow path configured to guide a portion of a gas that has passed through the suction pipe toward the compression mechanism ; and a second flow path configured to guide a remaining portion of the gas that has passed through the suction pipe toward the gas flow path , the second flow path includes: a tapered portion having a flow path cross-sectional area that decreases toward an outlet of the second flow path ; and a reverse tapered portion being closer to the outlet of the second flow path than the tapered portion is, the reverse tapered portion having a flow path cross-sectional area that increases toward the outlet of the second flow path . a tapered portion having a flow path cross-sectional area that decreases toward an outlet of the second flow path ; and a reverse tapered portion being closer to the outlet of the second flow path than the tapered portion is, the reverse tapered portion having a flow path cross-sectional area that increases toward the outlet of the second flow path . <EOS>