The invention discloses a high-efficiency crusher capable of controlling ore particle size. The high-efficiency crusher capable of controlling ore particle size comprises a crusher box, an outer coveris fixedly arranged at the top of the crusher box, moreover, the top of the outer cover is fixedly provided with a feeding groove, the top of the crusher box is fixedly provided with a first hydraulic pump and a second hydraulic pump, the output end of the first hydraulic pump is fixedly provided with a first crushing plate, the output end of the second hydraulic pump is fixedly provided with a second crushing plate, a first motor and an annular guide rail are fixedly arranged in the middle of the inner bottom wall of the crusher box, the output end of the first motor is fixedly provided witha first rotating shaft, the end, far away from the first motor, of the first rotating shaft is fixedly provided with a crushing column body. Simple crushing is achieved firstly, ore is crushed through crushing teeth with different specifications on the outer surface of the crushing column body, a separation plate plays a role in screening, the crushing process is efficiently completed, and it isfurther ensured that the ore particle size meets the follow-up process requirements.