A compressor comprising: a compressor body that includes a suction port which suctions a gas, a pair of rotors comprising a female rotor and a male rotor which are rotatably supported by a bearing (15, 16) and compressing the gas suctioned from the suction port in cooperation with a rotor chamber, and a discharge port which discharges the compressed gas; an oil collector that includes a primary separation unit which primarily separates an oil from the gas compressed by the compressor body and a secondary separation unit which secondarily separates an oil from the gas from which the oil is primarily separated by the primary separation unit; a primary separation oil supply line that is connected to the oil collector, and a secondary separation oil supply line that is connected to the primary separation oil supply line, characterized in that the primary separation oil supply line is connected to a compression tooth groove space of the female rotor defined by an inner wall of the rotor chamber and a pair of adjacent teeth of the female rotor in a cross-section perpendicular to a rotor shaft of the compressor body, the primary separation oil supply line supplying the oil separated by the primary separation unit to the bearing of the rotor and the compression tooth groove space of the female rotor; and the secondary separation oil supply line supplying the oil separated by the secondary separation unit to the compression tooth groove space of the female rotor, the compressor further comprising an oil drain line connected to the compressor body that supplies the oil separated by the primary separation unit and used to lubricate the bearing (15, 16) of the rotor (22, 24) to a low-pressure tooth groove of the rotor (22, 24) without using the primary separation oil supply line. a compressor body that includes a suction port which suctions a gas, a pair of rotors comprising a female rotor and a male rotor which are rotatably supported by a bearing (15, 16) and compressing the gas suctioned from the suction port in cooperation with a rotor chamber, and a discharge port which discharges the compressed gas; an oil collector that includes a primary separation unit which primarily separates an oil from the gas compressed by the compressor body and a secondary separation unit which secondarily separates an oil from the gas from which the oil is primarily separated by the primary separation unit; a primary separation oil supply line that is connected to the oil collector, and a secondary separation oil supply line that is connected to the primary separation oil supply line, characterized in that the primary separation oil supply line is connected to a compression tooth groove space of the female rotor defined by an inner wall of the rotor chamber and a pair of adjacent teeth of the female rotor in a cross-section perpendicular to a rotor shaft of the compressor body, the primary separation oil supply line supplying the oil separated by the primary separation unit to the bearing of the rotor and the compression tooth groove space of the female rotor; and the secondary separation oil supply line supplying the oil separated by the secondary separation unit to the compression tooth groove space of the female rotor, the compressor further comprising an oil drain line connected to the compressor body that supplies the oil separated by the primary separation unit and used to lubricate the bearing (15, 16) of the rotor (22, 24) to a low-pressure tooth groove of the rotor (22, 24) without using the primary separation oil supply line.