The invention relates to a glass cutting machine, in particular to a rounded glass cutting machine. The rounded glass cutting machine can accurately conduct round cutting, saves manpower and is high in safety. The rounded glass cutting machine comprises a base, a platform, a rack, a first air cylinder, an N-shaped rod, an iron ring, a pressing block, a U-shaped frame, a first mounting plate, a motor, a first spring, a connecting plate and the like. The upper part of the base is connected with a platform; the right lower part of the base is connected with a rack; a first cylinder is mounted atthe top inside the rack. The rounded glass cutting machine is provided with the adjusting mechanism and the glass cutter, the position of the glass cutter is adjusted through the adjusting mechanism,rounded glass of a certain size can be accurately cut, and the accurate cutting effect is achieved; meanwhile, the motor arranged on the rounded glass cutting machine drives the glass cutter to rotatethrough related parts to conduct round cutting, and operation is convenient; the rounded glass cutting machine is further provided with a material box and related components, so that the equipment can move glass blanks more conveniently.