The invention relates to an adsorbing material performance testing device and a using method of the adsorbing material performance testing device. The adsorbing material performance testing device comprises a main body testing system, a thermodynamic desorption system, an automatic control system, an air compressor, an air filtering dehumidifier, a testing gas generation source, an air drying part, a gas mixer, an electromagnetic flowmeter, a temperature and humidity sensor, a pressure sensor, a temperature and humidity controller, a solenoid valve, an upstream gas sampling hole, an adsorption tank, a sealing ring, an adsorbent barrel, an adsorbent barrel coupling, an annular sampling ring, a segmental gas sampling hole, a gas concentration detector, an elastic pipe section, a downstream gas sampling hole, a vacuum pump, an air cylinder swinging arm, an oscillating cylinder, an electronic balance, a reciprocating cylinder, a circuit and a main machine; the adsorbent performance testing system has regulation performance under certain pressure at certain temperature in a certain humidity range due to cooperation of the above components, the adsorbing material performance testing device can be applied to the competition and interference action mechanism when researching adsorption of all components of mixed gas. The adsorbing material performance testing device has the characteristics of advanced and reasonable structure, automation control and complete function, and can be operated simply and rapidly and the like.