The invention discloses a novel energy-saving mixer-mill. The novel energy-saving mixer-mill consists of a first hydrostatic bearing, a second hydrostatic bearing, a rotator, hydrostatic bearing sealing covers, a first local dust collector, a second local dust collector, a first gear, a first transmission system, a second transmission system, a third gear, a fourth gear, a first rolling bearing, a support of the first rolling bearing, a second rolling bearing, a support of the second rolling bearing, and a crushing and grinding component, wherein the shaft journals of hollow shafts at the two ends of the rotator are respectively placed on the first hydrostatic bearing and the second hydrostatic bearing and are covered by the two hydrostatic bearing sealing covers respectively; the first gear is connected with an output shaft of the transmission system; the second gear is arranged at the left end of a cylinder in a penetrating way; the first gear is engaged with the second gear; the crushing and grinding component is arranged in the rotator in the penetrating way; cage stirring shafts at the two ends of the crushing and grinding component respectively penetrate from the hollow shafts at the two ends of the rotator; and the crushing and grinding component is driven to rotate by the second transmission system. When the novel energy-saving mixer-mill works, the rotator floats, and the complete liquid lubrication is realized; the grinding effects between a grinding medium and a mineral aggregate and amoing the mineral aggregates are enhanced because of a corrugated liner plate in the rotator; and the mineral aggregate can be ground quickly by the crushing and grinding component.