The invention discloses an inner core plate direct pressing method. The method comprises the steps of S1, performing plate splicing designing on the inner core plate according to a client requirement,thereby satisfying a plate dimension requirement; S2, performing designing according to the client requirement and manufacturing an inner line; S3, performing AOI inspection on the inner line; and S4, performing direct plate overlapping pressing processing on the inner core plate and a PP sheet, thereby satisfying a plate thickness requirement of the client. The inner core plate direct pressing method according to the invention has advantages of improving production efficiency through directly pressing a plurality of PPs, preventing a foreign manner caused by filler, reducing unqualified rateof finished products, and reducing slide plate abnormity through using high pressure and low temperature increase rate.