The invention discloses an energy-saving mixer mill which is formed by a first static-pressure bearing, a second static-pressure bearing, a rotary body, static-pressure bearing sealing covers, a first partial dust collector, a second partial dust collector, a first gear, a first transmission system, a second transmission system, a third gear, a fourth gear, a first rolling bearing and a support thereof, a second rolling bearing and a support thereof, and a crushing grinding part, wherein shaft necks of hollow shafts at the two ends of the rotary body are respectively placed on the first static-pressure bearing and the second static-pressure bearing, and are respectively covered by the two static-pressure bearing sealing covers; the crushing grinding part is arranged in the rotary body in a penetrating manner; stirring cage shafts at the two ends of the crushing grinding part respectively stretch out from the hollow shafts at the two ends of the rotary body; and the crushing grinding part is driven by the second transmission system. In a working process, the rotary body is floated by the static-pressure bearings to ensure that a lubricating oil film is complete and complete liquid lubrication is realized; the collision between the crushing grinding part and mineral aggregates, the grinding between the crushing grinding part and the mineral aggregates, and the grinding between the mineral aggregates are enhanced under the common effect of corrugated linings in the crushing grinding part and the rotary body; and therefore, the rapid fine grinding of the mineral aggregates can be realized.