The endoscope is provided with the forceps elevator which is erectably provided in the distal end part of the insertion part of the endoscope and guides a treatment tool led out from the distal end part. The forceps elevator has an erecting motion range from a minimum angular position to a maximum angular position. If a state in which the treatment tool is not led out from the distal end part is assumed, the erecting operation lever for operating the movement of the forceps elevator has: a first operation range where the erecting operation lever is operated within the erecting motion range of the forceps elevator； and a second operation range where the erecting operation lever is operated beyond the first operation range. When the erecting operation lever is operated into the second operation range, the locking mechanism locks the movement of the erecting operation lever.
