The invention discloses an efficient anti-blocking mechanical smashing device. The efficient anti-blocking mechanical smashing device comprises supporting legs, a mounting base, mounting nuts, a motor, a driving wheel, a power chamber, a transfer wheel, a driven wheel, a control switch, a feed hopper, blades, rollers, a smashing chamber, striking plates, a residue outlet, a sieve body, a discharging port, a discharging box, a base and sieve pores. A base is arranged on the supporting legs, the striking plates are arranged on two sides of the discharging box and can be knocked during discharging to form vibration, and material powder adhered to the inner wall of the discharging box vibrates to fall off, so that the phenomenon of blockage caused by accumulation of powder materials is prevented. The inclined sieve body is arranged below the discharging box to screen the powder, powder reaching the standard is collected through the discharging port after being screened, and residual particles cannot enter the residue outlet under the gravity action of the residual particles on the inclined sieve body through the sieve body, so that the quality of the material powder smashed by the equipment is improved, the special screening work in the later period is saved, and the efficient anti-blocking mechanical smashing device is trouble-saving and labor-saving.