An endoscope device includes an imaging element that images a subject through an imaging optical system including an objective lens disposed at a distal end part of the endoscope, a signal processing unit that processes a captured image signal, which is obtained by imaging the subject by the imaging element, to generate a captured image, an auxiliary measurement light emitting unit that emits planar auxiliary measurement light into a visual field of the imaging optical system from the distal end part, and a display control unit that causes a display unit to display the captured image including an intersection line formed in a portion where a plane formed by the auxiliary measurement light intersects the subject. The display control unit causes a scale serving as an index of the size of the subject to be displayed on the intersection line included in the captured image.
