The invention provides a continuous laminating method for a composite floor. The method comprises the steps that a base material, a surface plate and a bottom plate are selected and prepared; secondly, point type gluing is conducted on the base material through moisture curing reaction type polyurethane hot melt adhesive; thirdly, blank assembling is conducted, and the surface plate, the base material and the bottom plate are automatically and continuously assembled through accurate surface plate, base material and bottom plate positioning equipment, and are directly and automatically conveyed to enter a continuous press to be subjected to cold pressing; fourthly, continuous normal-temperature pressure applying is conducted; and fifthly, splitting is conducted, a floor blank obtained after cold pressing enters a multiple blade saw unit and is split into floor blank bodies equal in width, wherein a multiple blade saw is a composition unit of the continuous cold press and is arranged after the laminating procedure. The composite floor manufactured through the method has many beneficial effects that the glue spreading amount is small, glue spreading is uniform, the gluing strength is uniform, the inner stress of the floor is small, the size stability is high, free formaldehyde release is avoided, the product quality is high, and the cold pressing period is short; and the production technology is simple, energy consumption is low, the production efficiency is high, and continuous and automatic production can be achieved.