The invention discloses automatic mowing mechanical equipment. The automatic mowing mechanical equipment comprises a direct current motor, cutting equipment, a box body, a compression box, a dust collector and a hydraulic lifting cylinder; the cutting equipment is arranged on one side of the box body; the direct current motor is arranged in the cutting equipment; an output shaft of the direct current motor is connected with a rotating rod; a cutting blade is arranged at one end of the rotating rod; an annular pipeline is arranged above the cutting blade; and the annular pipeline is connected with an air outlet of a fan through an air supply pipeline. Water on the cutting blade is blow-dried by wind powder, so that the rusting phenomenon of the cutting blade caused by water is avoided; the hydraulic lifting cylinder ascends and descends to control ascending and descending of a partition plate, so that a lawn can be cut into proper height according to requirements conveniently; turfgrass clippings generated by cutting can be absorbed into the compression box by the dust collector, so that the turfgrass clippings can be prevented from retaining on the grass; and the turfgrass clippings are compressed and vacuumized by a vacuum device and a pressing plate, so that the storage quantity in the fixed space is increased.