To provide an easily operable extensible table type table shape device which is equipped with a foot rest and a longitudinally extensible table and has a foot space area adjustable matching a user's physique.

This extensible table type table shape device is equipped with a desk part 4 which comprises a top board 2 and a leg part to support the top board 2 from downside and to cover both sides or front and rear sides by side boards 3 and enabled to store a controller 4a and a power source device 4b, and a longitudinally slidable table 5 which is equipped on the upper part of the top board 2 and on which an operating part 4c such as an operating panel, a display device 4d, etc. A foot rest 6 which is forward projected from the lower part of the leg part and a pair of right and left connecting members 7 whose one ends are fixed to the foot rest 6 and the other ends to the table 5 to connect the foot rest 6 and the desk 5 and which is linked to the table 5 to make the foot rest 6 longitudinally movable are also equipped on the table shape device.