The invention discloses a grinding and discharging device for wheat flour processing. The grinding and discharging device comprises a frame body, wherein a hydraulic pump is arranged in a mounting groove in the rear side of the upper end of the frame body; an upper end output head of the hydraulic pump is fixedly connected with the bottom end of a telescopic column; the top end of the telescopic column is fixedly connected with the bottom end rear side of the surface of a grinding cylinder in a grinding device; a connecting piece is arranged on the front side of the upper end of the frame body. The grinding and discharging device for wheat flour processing is simple in structure and convenient to use, sufficient grinding of wheat and rapid discharging of wheat flour are realized, great convenience is brought to a user, according to use demands, efficient comprehensive grinding of wheat can be realized by the grinding device, rapid and accurate output of the wheat flour obtained after grinding can be realized by a discharging device, so that workload of workers is reduced, production benefits of an enterprise are increased, production quality of wheat is guaranteed, and grinding anddischarging efficiency of the wheat flour is increased.