A method of controlling an endoscope includes,inserting an insert part having an imaging unit at a distal end through the body;making an imaging direction of the imaging unit variable by bending of a bending part,wherein the bending part is included in the insert part;detecting an amount of insertion of the insert part through the body; anddetermining whether the bending part is to be bent or not on the basis of operation of a direction input part depending on the amount of insertion.