The invention discloses a sesame seed smashing device.The device comprises a shell, a screen arranged in the shell, and a smashing blade arranged in the shell, wherein the shell is obliquely arranged, an opening is formed in the top of the screen, the smashing blade is arranged in the screen, the top of the smashing blade is connected and fixed to the shell, the screen and the shell are spaced, and the screen and the smashing blade are spaced; the space between the screen and the smashing blade serves as a feeding channel, the space between the screen and the shell serves as a discharging channel, the bottom of the screen is connected with a transmission shaft, and the transmission shaft drives the screen to rotate; a discharging port is arranged on the side wall of the bottom of the shell, and a feeding port is arranged on the top of the shell.The device has the advantages that smashing speed is increased, and oil generation during smashing is prevented; smashed sesame seeds with granularity meeting the discharging requirement are discharged in time through the screen, repeated cutting or grinding of finished granules in the smashing device is effectively reduced, and oil generation is further prevented.