Height-adjustable motion high ladder

The invention discloses a height-adjustable motion high ladder. The height-adjustable motion high ladder includes four bases; the tops of the bases are hinged to rotatable columns; screw-joint columns extending upward are arranged on the centers of top end surfaces of the rotatable columns; the screw-joint columns are screw-jointed in screw-joint holes formed in the centers of bottom surfaces of lifting sleeves; the lower ends of rotatable handles are hinged to side walls of the rotatable columns, the upper parts of the rotatable handles are pressed against the side walls of the rotatable columns; permanent magnet blocks are nested and fixed in positioning grooves formed in the side walls of the rotatable columns; the upper parts of the rotatable handles are attracted on the permanent magnet blocks; two ends of upper cross beams are fixedly provided with connection blocks; two connection blocks are fixed on the left and right lifting sleeves which are corresponding to each other; two ends of two longitudinal beams are fixedly welded on the left and right ends of the two upper cross beams; and two ends of a plurality of intermediate beams are fixedly welded on the two longitudinal beams. The height adjustment of the lifting sleeves can be achieved through the rotatable columns, and different lifting demands can be met; and the height-adjustable motion high ladder is wide in lifting range, is good in effect, and is high in efficiency.