To ensure sufficient supporting strength and to prevent a counter, which is pulled out, from being retracted improperly in the sliding type auxiliary counter used by pulling out when necessary.

The sliding type auxiliary counter 4, which is pulled out from the front of an accommodating space 3 provided under a counter of kitchen equipment (a back counter 1), is constituted of a top board 8, supporting legs 10 which are fixed on both sides of the top board 8 and have casters 9 at the lower parts, and a locking mechanism 12 for fixing the counter 4 in the relative position to the kitchen equipment while the top plate 8 is pulled out to a prescribed position from the accommodating space 3.