An endoscope apparatus according to the present invention includes: a light source device configured to continuously emit first light of a first wavelength band, and sequentially emit second light of plural second wavelength bands different from the first wavelength band and different from each other； and an imaging device including: a spectroscopic unit configured to spectrally separate light from a subject, the light being due to illumination light emitted by the light source device, into light of the first wavelength band and light of the second wavelength bands； a first imaging element configured to generate a first image signal by receiving and photoelectrically convert the light of the first wavelength band spectrally separated by the spectroscopic unit； and a second imaging element configured to generate a second image signal by respectively receiving and photoelectrically converting the light of the second wavelength bands spectrally separated by the spectroscopic means.
