A plastic flooring laminating device, wherein the plastic flooring laminating device at least comprises an extruder, a rolling unit, a movable laminating machine, and a drawing mechanism, and the extruder, the rolling unit, the movable laminating machine and the drawing mechanism are all connected electrically to an electric control system to laminate a plastic flooring material comprising a substrate layer, a printed layer and a wear-resisting layer into a finished plastic flooring product in an automatic operation mode, wherein, the extruder is configured to form a substrate layer, and one end is provided with a discharge port to extrude out the substrate layer and convey the substrate layer to the rolling unit; the rolling unit at least comprises a calender, a first unwinding mechanism, and a second unwinding mechanism, the first unwinding mechanism and the second unwinding mechanism respectively convey a printed layer and the wear-resisting layer to the calender, and the calender then utilizes a plurality of guide rollers and pinch rollers to cooperate to roll and pre-bond the substrate layer, the printed layer and the wear-resisting layer into a whole, and then conveys the material to the movable laminating machine; wherein the movable laminating machine comprises a rack on which a laminating mechanism, a driving mechanism and a conveying mechanism are disposed, wherein, with regard to the laminating mechanism, an upper die base, a lower die base and at least one first power source are disposed on a die frame, one end of the first power source is provided with a protruding telescopic shaft, and one end of the telescopic shaft is connected fixedly to an outer edge surface of the upper die base to drive the upper die base to move up and down, the driving mechanism comprises a second power source, two slide rails, and two sliders, the second power source is fixed on the rack, the two slide rails are disposed respectively on both sides of the rack, the two sliders are fixed at positions of the laminating mechanism corresponding to outer sides of the two slide rails, so that the two sliders are embedded in the corresponding slide rails, and a connecting part is disposed between the second power source and the laminating mechanism, so that the laminating mechanism can be driven by the second power source to move on the slide rails; the conveying mechanism is disposed on top of the rack, and a conveying surface is on the same horizontal plane as a laminating surface of the lower die base, and the conveying mechanism is configured to assist a movement of a material to be laminated by the laminating machine; thus, when the movable laminating machine laminates the material, time of lamination matches speed at which the material is conveyed and moved, the laminating mechanism is driven by the second power source to move from a front section position to a rear section position on the rack, after lamination is complete, is driven again by the second power source to move to the front section position for next laminating operation, and thereby the production operation of reciprocating lamination is accomplished; and wherein the outer edge surface of the upper die base of the movable laminating machine corresponding to the lower die base is provided with a die plate, and an embossing pattern is formed on an outer plate surface of the die plate; the drawing mechanism generates conveying power, and is disposed after the movable laminating machine in an operation procedure of a production line to drive the plastic flooring material to move; and in this way, an automatic reciprocating continuous lamination operation of plastic flooring is achieved, thus not only achieving a pattern structure with better quality but also increasing an efficiency of production.