Occupant protection device

The present invention relates to an occupant protection device, and aims to obtain an occupant protection device capable of improving the safety of an occupant having a medical device mounted thereon. An occupant protection device according to one embodiment of the present invention is provided with: a collision sensor capable of detecting a collision of a vehicle; an occupant detection unit capable of detecting whether or not an occupant having a medical device mounted therein is present in the vehicle when the collision sensor detects a collision of the vehicle; an electromagnetic wave detection unit capable of detecting electromagnetic waves; a control unit capable of controlling the vehicle to reduce electromagnetic waves in the vehicle according to a detection result of the electromagnetic wave detection unit; and a protection processing unit capable of performing protection processing for protecting the occupant having the medical device attached thereto on the basis of the detection result of the elect