Disclosed is a two-dimensional X-ray detector array inspection method capable of recognizing two-dimensional X-ray detector arrays unsuitable for X-ray imaging by means of identifying quickly growing defective pixels. The two-dimensional X-ray detector array inspection method involves a bias voltage step for repeated supply and stopping of a bias voltage from a common electrode; a dark current value measurement step for measuring the pixel values of pixels in a non-X-ray-irradiating state; a defective pixel identification step for identifying defective pixels on the basis of the pixel values of the pixels measured in the dark current value measurement step; and a determination step for determining whether or not the two-dimensional X-ray array detector is suitable on the basis of the size of the missing pixel chunks or the total number of defective pixels identified in defective pixel identification step.