Provided is an endoscope capable of more surely observing curves of a colon. The endoscope according to an embodiment of the present invention comprises a tip end part having a front photographing device installed thereon, a curve part, and an insertion part, wherein at least one groove is formed on the side of the tip end part. The groove includes a first inclination surface which is inclined downward towards the rear of the endoscope. Also, a rear photographing device toward the rear of the endoscope, a lighting part, lens cleansing nozzle are installed on the first inclination surface.
