The invention discloses a glass cutting machine. A framework includes two parallel side beams. A first wheel set includes a first wheel axle and a first roller arranged thereon. The first wheel axle is disposed between the two side beams and can rotate around the axis of itself. A second wheel set includes a second wheel axle, two sliding sleeve rods arranged thereon, and second rollers arranged on the sliding sleeve rods. The second wheel axle is arranged between the two side beams and can rotate around the axis of itself. The second wheel set is arranged at the downstream of the first wheelset in the movement direction of glass, wherein each sliding sleeve rod can rotate with the second wheel axle and can move in the axial direction of the second wheel axle, so that the second rollers can move along with the sliding sleeve rods to transport the glass. A driving mechanism respectively drives the two sliding sleeve rods to move close to or away from each other in the axial direction of the second wheel axle. The glass cutting machine is full-automatic in operation and high in work efficiency, thus greatly reducing labor intensity of workers.