An endoscope apparatus includes: a light source device radiating at least one or more illumination lights having a predetermined wavelength band to a subject a CCD picking up an image of a return light from the subject based on radiation of the illumination light from the light source device an image processing section outputting a first image signal of a first wavelength band having a peak wavelength of spectral characteristic, between a wavelength band including a maximum value and a wavelength band at a minimum value with regard to an absorption characteristic of living tissue, after image pickup by the CCD and an observation monitor performing image display on the basis of the first image signal.
