To provide a simple desktop partition which is mounted in an upright position on a part of a desk to hide the top surface of the desk from the outside has a plug-connecting tap enclosed therein in such a manner that it can be taken out and can enhance an in-office environment while reducing the cost of facilities for wiring.

A blind surface is formed when a folded sheet 5 placed perpendicular to the top surface of a desk 2 and locked by a removably installed holder 4 has its end locked to the end 2a of the desk 2; plug-connecting taps 6a, 6b are enclosed and held inside the blind face so that they are hidden. Therefore, the structure is simplified, the cost of facilities is reduced, and appearance can be enhanced.