To provide a keyboard housing type operation desk table from which the keyboard can be drawn out by uplifting the keyboard housing section on the table surface and open and close the opening of the table surface by lifting and lowering the keyboard housing section.

An operation desk table 1 is equipped with a keyboard housing section 5 facing an opening 4 provided at the table surface 3 of the desk table body 2. The keyboard housing section 5 is attached to the desk table body 2 in a manner that it can be lifted and lowered by a lifting and lowering operation mechanism 6. The keyboard housing section 5 is provided with a keyboard supporting surface 8 that supports the keyboard 7 and a top plate 9 that covers the top of the keyboard supporting surface 8. The keyboard housing section 5 is uplifted to a prescribed position by the lifting and lowering operation mechanism 6 so that the keyboard supporting surface 8 and the top surface of the table surface 3 are approximately flushed and lowered down to a prescribed position by the lifting and lowering operation mechanism 6 to close the opening 4 of the table surface 3 by the top plate 9.