To provide a wagon desk having a vertically moving and height adjustable tabletop with a mouse board that can newly secure an sufficient space for operating a mouse or the like when necessary and does not interfere with using a drawing member provided at the ascent and decent top board.

A wagon desk is provided with a vertically movable and height adjustable tabletop 4 on a fixed top board 6 of a main body 2. A mouse board 5 for operating a mouse is mounted under the ascent and decent top board 4 in respect that the mouse board can be withdrawn frontward from the top board 4. A drawing member 14 is provided under the front edge of the ascent and decent board 4, and a finger insertion member penetrated from upward to downward at a suitable position exactly under the drawing member 14 in a pushed condition is provided at a front edge of the mouse board 5.