The invention relates to a line friction rotating platform of a sliding plate. The line friction rotation platform has the technical scheme: a rotating seat is arranged in the center of a rotating platform base; a rotating platform track bracket is connected with the rotating seat; a travelling wheel assembly is arranged on the rotating platform track bracket; the rotating platform track bracket is supported by the travelling wheel assembly and rotates by taking the rotating seat as a center; the upper surface of the rotating platform track bracket is provided with a walking board assembly and a guide track assembly, wherein the walking board assembly provides a walking support for the sliding plate, and the guide track assembly provides a guide for the sliding plate; a rotating driver isarranged at the left side of the rotating platform base; a rotating frame is connected with the left side surface of the rotating platform track bracket; the rotating driver drives the integral line friction rotating platform to rotate by driving the rotating frame; and the rotating frame is provided with a positioning mechanism used for positioning the sliding plate. The line friction rotating platform has the advantages of ingenious, compact and reasonable structure, small size, convenience for overhaul and maintenance, low work noise and good stability and can be installed and work in a narrow space.