Provided is a performance testing device including: a compressor configured to generate compressed air; an air storage tank configured to receive the compressed air generated by the compressor; a regulator connected to each of the compressor and the air storage tank to control a pressure of the compressed air; a main supply line connected to the regulator to move the compressed air; an input port line and an output port line connected to the main supply line to receive the compressed air from the air storage tank and deliver the compressed air to an input port or an output port of a test object; and a pneumatic booster configured to pressurize the compressed air received in the input port line or the output port line, wherein in order to test a performance of the test object, the pressurized compressed air is applied to the input port or the output port of the test object.