A cable connection support apparatus has a structure in which a master apparatus and a slave apparatus are connected to both ends of a plurality of cables, and each apparatus is connected to each cable by a connecting terminal. The master apparatus and the slave apparatus are grounded. The master apparatus makes, for each connected cable, an inquiry about a position of a terminal of the slave apparatus to which the cable is connected, and inspects for inter-continuity, grounded connection, and unintentional disconnection. The connection destinations and inspection results are displayed on a display apparatus. Consequently, the connection condition for each cable wire in a cable can be confirmed.