The present invention provides an endoscope capable of more precisely observing curves in the large intestine. The endoscope according to one embodiment of the present invention comprises: a front end part in which a forward filming device is installed a bending part and an insertion part, wherein the insertion part has at least one groove formed on the side surface thereof. The groove includes a first inclined surface which becomes more downwardly inclined towards the rear portion of the endoscope. The first inclined surface comprises: a rearward filming device facing the rear side of the endoscope a light part and a lens cleaning nozzle.
