The invention relates to a compressor which comprises a shell, and a compressing mechanism and an oil-gas separation device arranged in the shell. An exhaust pipe and an air inlet pipe are arranged onthe shell. The compressing mechanism is provided with an exhaust port and an air suction port. The oil-gas separation device is arranged on an exhaust path between the exhaust port of the compressingmechanism and the exhaust pipe of the shell or is arranged on an air suction path between the air inlet pipe of the shell and the air suction port of the compressing mechanism; and the oil-gas separation device is constructed to be a cyclone type oil-gas separation device, so that lubricating oil in an oil-gas mixture entering the oil-gas separation device can be separated from a working fluid under the action of a centrifugal force, and the working fluid subjected to oil-gas separation is exhausted out of the compressor through the exhaust pipe. According to the compressor provided by the invention, the circulation rate of the lubricating oil can be favorably controlled.