Method and apparatus for cutting glass material

To provide a method for cutting a glass material wherein the glass material can be certainly cut a glass gob having a uniform quality and a uniform temperature distribution, without being deformed or damaged. Upon cutting a glass material 20 discharged from a glass material reservoir 10 into a glass gob 21 at a predetermined size by left and right cutting blades 91, 92 which come close to or away from each other in a horizontal direction, said cutting blades 91, 92 are opposed to the other and are translated in such a way that the movement occurs in a forward direction from stand-by positions P, P 1 and in a downward direction (S 1 ) to cut the glass material (C), and thereafter, in a further downward direction and in a rearward direction (S 2 ), and thereafter, in an upward direction to return back to said stand-by positions (S 3 ).