The invention prevents the occurrence of image blurring in fluorescent images while reducing the amount of noise in the fluorescent images. Provided is a fluorescent endoscope apparatus (1) having: an illumination unit (3) that irradiates excitation light and illumination light on the subject (A) a fluorescent imaging unit (18) that photographs the fluorescence generated in the subject (A) by the irradiation of the excitation light from the illumination unit (3) and acquires a fluorescent image a storage unit that stores the acquired fluorescent image a returning light imaging unit (18) that photographs the returning light returning from the subject (A) as a result of the irradiation of the illumination light from the illumination unit (3) and acquires a returning light image an image data extraction unit that extracts, from the acquired returning light image, image data representing the intensity of the illumination light irradiated on the subject (A) an added image number-setting unit that sets, on the basis of the extracted image data, the number of images to be added so as to be lower for higher illumination light intensities and an averaged image-generating unit that generates an averaged image by averaging the set number of fluorescent images to be added, which are stored in the storage part.Linvention empêche la survenue dun flou dimage dans des images fluorescentes, tout en réduisant la quantité de bruit dans les images fluorescentes. Linvention porte sur un appareil dendoscope fluorescent (1) ayant : une unité déclairage (3) qui irradie une lumière dexcitation et une lumière déclairage sur le sujet (A) une unité dimagerie fluorescente (18) qui photographie la fluorescence générée dans le sujet (A) par lirradiation de la lumière dexcitation provenant de lunité déclairage (3) et acquiert une image fluorescente une unité de stockage qui stocke limage fluorescente acquise une unité dimagerie de lumière de retour (18) qui photographie la lumière de retour ren
