An endoscopic diagnosis system includes a light source unit (12) for emitting green and red light, blue and green light, or white light (LD1) and excitation light (LD2) having different central wavelengths for causing an autofluorescent substance to emit autofluorescence, an imaging unit (16) for receiving reflected light from the observation region to acquire a reflected light image when the observation region is illuminated with the illumination light emitted, and receiving autofluorescence that is emitted from the autofluorescent substance, absorbed by blood, and decreases according to the amount of the blood to acquire an autofluorescence image when the observation region is irradiated with the excitation light emitted, and an image correction unit (68) for correcting the autofluorescence image based on the reflected light image.
