The invention discloses multiple combined type sliding tables moving at the triple speed. The sliding tables comprise a controller, sliding table bodies and a first to Nth sliding table mechanisms, and N is larger than or equal to three. Each sliding table mechanism comprises a driving block, a sliding table body position induction device, a sliding table base, a linear guide rail, a driving oil cylinder, a left transmission mechanism and a right transmission mechanism, wherein the driving oil cylinder is a left-right bi-directional output hydraulic oil cylinder; the left and right transmission mechanisms are triple torque pulley blocks, and the stress end of a stay rope is fixed to the driving block; and the driving block is provided with a butt joint pin; and each sliding table body is arranged on the corresponding linear guide rail and can slide along the linear guide rail. The sliding table bodies are provided with a plurality of butt joint structures; the ends of the sliding table bases are combined in a butt joint mode, and the sliding table bases share the sliding table bodies. The linear guide rails are located on the same straight line, make contact with one another and are fixedly connected. According to the multiple combined type sliding tables moving at the triple speed, conversion of driving force of the multiple sliding table bases to the sliding table bodies is achieved through the butt joint function, so that cross-regional operation of the sliding table bodies is achieved; and the speed and the stroke of the oil cylinders are increased triply through transmission of the pulley blocks, and the length of each oil cylinder can be shortened by two thirds.