The invention relates to a brush processing machine, in particular to a brush bristle cutting and grinding integral machine, which comprises a machine box, a material delivery mechanism, a bristle cutting mechanism, a bristle grinding mechanism and a powder collection device, wherein the material delivery mechanism, the bristle cutting mechanism, the bristle grinding mechanism and the powder collection device 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, 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, and the bristle cutting mechanism and the bristle grinding mechanism are sequentially arranged between the material feeding opening and the material discharging opening along the conveying direction of the material delivery belt. The brush bristle cutting and grinding integral machine has the advantages that the manual operation is convenient, the powder collection effect is good, and the flatness and smoothness of the bristles of the produced finished brushes are high.