The invention relates to a gas compressor and a centripetal air entraining vortex reducing device thereof. The centripetal air entraining vortex reducing device is located in a disc cavity of the gas compressor and comprises a vortex reducing pipe and a retainer; the vortex reducing pipe is provided with a gas inlet and a gas outlet, the gas inlet is arranged in a suspended mode, and the gas outlet is fixed on the retainer. According to the gas compressor and the centripetal air entraining vortex reducing device, the air entraining airflow pressure loss can be reduced to the maximum extent.