The invention provides an infrared array radiation source calibration device and method. The device comprises a light source system, a collimation optical system, a plane reflector, a precise rotary table, a convergence optical system, an infrared image acquisition system, a radiation detection system, a data acquisition system, a computer and a measurement and control system. According to the infrared array radiation source calibration device and method, a method for comparing a measured infrared array radiation source with a reference black body is adopted, a first-stage standard black bodyis selected for the reference black body, the first-stage standard black body can be directly traced to a freezing point black body, the temperature stability of the first-stage standard black body is+/-0.1 DEG C/h, the emissivity can reach 0.995, the measurement accuracy is greatly improved, and the uncertainty of a measurement result is reduced; and a background source is used for eliminating background radiation, increasing the detection capability of the radiation detection system and improving the detection precision and stability of the system, the low background source is made into a hollow barrel shape, all the internal structures are welded in a sealed mode so as to allow liquid nitrogen to be injected, a cold background is provided for a detector, radiation of the environment isreduced, and the signal-to-noise ratio is improved.