Provided is a medical imaging apparatus that, while preventing damage of connector pins, can simultaneously connect electric connectors when a bed is mechanically docked with an apparatus main body. One coupling mechanism either on an apparatus main body side or on a bed side includes a coupling plate, and the other coupling mechanism includes a holding member that holds a coupling plate that, during coupling, respectively contacts both side surfaces of the coupling plate at two or more points, and sandwiches and holds the coupling plate from both sides. A first electric connector is mounted on the coupling plate, a second electric connector is mounted on the holding member, and an electric connector coupling mechanism that couples the first and second electric connectors is mounted on at least one of the coupling plate and the holding member in a state where the coupling plate is held by the holding member.