A control unit makes a connection state between a connection device connected to a connection management device and an electronic device when a determination unit determines that identification information of the connection device connected to the connection management device has been registered in a connection work plan and a connection history of a connection order preceding a connection order of the connection device is “connected”, and does not make the connection state between the connection device connected to the connection management device and the electronic device when it is determined that the connection history of the connection order preceding the connection order of the connection device is “unconnected”.