The invention relates to a pressing method of a PCB copper-clad plate, which comprises a core veneer, a film and a copper plate; the film comprises an upper film and a lower film; the copper plate comprises an upper copper plate and a lower copper plate; the upper copper plate, the upper film, the core veneer, the lower film and the lower copper plate are orderly aligned and connected from top tobottom. Through pressing the copper-clad plate through reasonable temperature and time, the plates can be combined well; the method is simple in procedure and low in cost; besides, the produced copper-clad plate is high in performance cost.