The invention relates to a brush processing machine, in particular to brush bristle grinding equipment, which comprises a machine box, a material delivery mechanism and a bristle grinding mechanism, wherein the material delivery mechanism and the bristle grinding mechanism are arranged in the machine box, the machine box is provided with a material feeding opening and a material discharging opening, the material feeding opening is used for putting to-be-processed brushes, the material discharging opening is used for discharging finished brushes, a material charging cylinder is arranged in the material feeding opening of the machine box, a material discharging hopper is arranged in the machine box, the output end of the material discharging hopper corresponds to the material discharging opening, a material discharging cylinder is arranged above the input end of the material discharging hopper, the material delivery mechanism comprises a stepping motor, a material delivery belt and a plurality of brush clamps, the material delivery belt is driven by the stepping motor, the brush clamps are regularly and fixedly arranged at the outer surface of the material delivery belt at the equal intervals, the output end of the material charging cylinder and the output end of the material discharging cylinder are in intermittent fit with the brush clamps, the bristle grinding mechanism comprises a machine frame, a revolution motor, a plurality of rotational motors and a plurality of bristle grinding groups, and the revolution motor, the rotational motors and the bristle grinding groups are arranged on the machine frame. The brush bristle grinding equipment has the technical advantages that the manual operation is convenient, and smoothness of the bristles of the produced finished brushes is high.