A video processor includes an ordinary image/narrowband image video circuit for generating an ordinary observation light image or narrowband light observation image, a fluorescent image video circuit for generating a fluorescent image, an image synthetic circuit for synthesizing the images generated by the ordinary image/narrowband image video circuit and the fluorescent image video circuit via a freeze memory unit to output this to a monitor, a selector for selectively outputting the images generated by the ordinary image/narrowband image video circuit and the fluorescent image video circuit to a digital filing device via the freeze memory unit, and a CPU for controlling the freeze memory unit, image synthetic circuit, and selector depending on the freeze selection switch, freeze switch, and release switch of an electronic endoscope.