The invention discloses a bamboo fiber high-pressure filling plate making device. The bamboo fiber high-pressure filling plate making device comprises a first machine body, wherein a feeding cavity with an upward opening is arranged in the first machine body, a mounting block is fixedly arranged on the bottom wall of the feeding cavity, a large-scale raw material block can be mounted on the mounting block, and the left end wall and the right end wall of the feeding cavity are in communication with grinding material cavities. The bamboo fiber high-pressure filling plate making device is used for taking materials by rubbing the large-scale raw material block, extruding and molding the raw materials of the bamboo and wood fibers after material taking, so as to form a high-strength bamboo fiber board; in the material taking process, the contact surface of a grinding disc and the large raw material block is large, the material taking efficiency is high, meanwhile, the downward feeding amount of the bamboo fiber raw materials is large, and the required time for device production is short; in addition, the bamboo fiber raw materials are heated before extrusion, the required pressure is small after the heated bamboo-wood fiber raw materials are extruded and formed, the internal clearance of the cooled bamboo-wood fiber raw materials is small, and the density of the produced bamboo fiber board is large, the strength is high; and the automation degree of the device is high, and the whole production process is convenient and fast.