A double sliding stability space-saving slide cover lifting structure used in an electronic device consisting of a base member and a cover panel is disclosed to include a pair hinges, a pair of sliding rail holders, a pair of bearing members, a pair of plastic slide guides, a pair of sliding rails, a pair of gears and a pair of gear racks is disclosed. The sliding rails are respectively slidably coupled to channel bars of the plastic slide guides in the bearing members, enhancing sliding stability. Further, the bearing members are prepared by a high load strength material and fixedly mounted on the sliding rail holders to support the plastic slide guides and the sliding rails, saving the space and enhancing the cover panel connection stability and preventing gear slippage and uneven bias of the cover panel.