An object of the present invention is to provide a slant-adjusting unit which is convenient to adjust the slant of the flat plate supported by the legs and furniture having the unit.and a slant-adjusting unit 200, comprising a first spherical plate 210, second spherical plate 220 having an inner curved surface in facing relation to an outer curved surface of the first spherical plate 210, and a third spherical plate 230 having an outer curved surface in facing relation to an inner curved surface of the first spherical plate 210, and furniture 1, comprising a flat plate 100, the slant-adjusting unit 200 connected to any position of the flat plate 100, a column portion 300, and connected to the slant-adjusting unit 200, and the flat plate 100 integrated with the first spherical plate 210 to adjust the slant at will.