the present invention provides a fluorometric imaging apparatus for detecting the image of a specimen by irradiating excitation light at samples on the specimen arranged in a two - dimensional manner and measuring fluorescent light produced from a fluorescent substance attached to the specimen , the fluorometric imaging apparatus including : a two - dimensional photodetector device for detecting excitation light passing through the specimen or reflecting off the surface thereof ; and movement means for repositioning the specimen according to images observed on the photoreceptor device .