The invention discloses a self-priming horizontal feed pulverizer, which comprises a pulverizer body, a support frame, a wind suction machine, a suction pulverization motor, a suction pipe, a pulverization chamber, a mixing chamber, a high-efficiency automatic pulverization device, Pushing screw, reducer, pulley set, servo motor, stirring plate, mixing chamber door, door leaf bracket, air outlet, hopper, moving roller, the pulverizing mixer body is located inside the supporting frame and connected by electric welding, and the wind suction The feeder is located on the upper right side of the crushing mixer body and connected through electric welding, and the suction crushing motor is located in the center of the rear of the wind suction machine and connected by electric welding. The invention is equipped with a high-efficiency automatic crushing device, which can automatically finely grind the feed after preliminary crushing, realizes step-by-step high-efficiency crushing, facilitates more uniform stirring, improves the quality of the feed, and effectively enhances the self-priming horizontal feed The practical performance and degree of automation of the crushing mixer.