To provide a structure for raising and lowering the top panel of a desk, with which the top panel can be raised and lowering the easily and quickly.

In a structure for raising and lowering the top panel of a desk, in which the top panel 5 is provided at the upper end of a main body 4 in such a way that its position can be varied vertically, the main body 4 is provided with a pair of right and left vertically movable lift members 11, 11, the top panel 5 is secured to the lift members 11, 11, and freely releasable holding mechanisms B for holding the top panel 5 in a raised position to which it is raised from the upper end of the main body 4 are provided corresponding to the pair of right and left lift members 11, 11, and are interlocked with each other so that the operation of one of the holding mechanism B, B leads to the operation of the other.