Abstract: The invention provides an inflatable sliding board configured specifically to be installed over a set of stairs. The width is designed to allow a portion of the steps to be exposed for climbing to the top of the slide. The underside of the Blow-Up Stair Slide is contoured with a series of recessed niches, designed to accommodate the individual steps. Further, encompassing the underside of Blow-Up Stair Slide is a non-skid rubber coating or series of rubber grips to facilitate firm attachment to wooden steps. Positioned on the both sides of the unit are slightly elevated retaining walls, and the base of the unit extends several feet past the bottom step, with an integrated safety bumper included to prevent a child from sliding onto the floor. A simple covered air valve is positioned at the top or bottom of the slide for use in inflating the unit.