The invention discloses a pavement ice crushing machine which comprises a fuel oil engine, a cab and an ice crushing mechanism. The ice crushing mechanism is characterized in that a vertical shaft is rotationally fitted in a horizontal beam hole on a rack; the lower end of the vertical shaft is connected to the middle part of an ice crushing roller shaft; two ice crushing rollers are rotationally fitted to two ends of the ice crushing roller shaft respectively; teeth with conical end heads are uniformly distributed on circumferential faces of the ice crushing rollers; an ice crushing box body is firmly connected to a horizontal beam; slide blocks matched with vertical way tracks of the rack are disposed on a front side plate and a rear side plate of the ice crushing box body; the lower end of a hydraulic cylinder is fixed on the rack; the upper end is connected to the horizontal beam; a hydraulic motor and the hydraulic cylinder are connected to a hydraulic pump station which is disposed on the rack; and an ice throwing impeller and another hydraulic motor which drives the ice throwing impeller are disposed in the part of the ice crushing box which extends rightwards. The machine disclosed by the invention is used for crushing and removing a pavement ice layer.