ENDOSCOPE DEVICE AND CONNECTION DETERMINATION METHOD

Provided are an endoscope device and a connection determination method for preventing light emission exceeding an allowable amount from being performed in a state where a light guide is not connected to an endoscope.An endoscope device of the present disclosure includes a light source unit configured to supply light to one end of a light guide; an insertion member including a connecting portion detachably connected to the other end of the light guide and a distal end that emits the light from the light guide to a target region of a subject; a light receiving unit configured to receive reflected light reflected by the target region of the subject and incident from the distal end; and a control unit configured to determine a connection state between the light guide and the insertion member on the basis of information of the reflected light received by the light receiving unit.