To provide a method and an apparatus for perforating a glass plate capable of eliminating a risk of producing a chip at the periphery of an aperture of a glass plate and preventing a diamond drill from clogging, and a bonded member used for them.

The bonded member 4 which is made by bonding a rubber plate 13 for dressing a diamond drill 2 and a resin-based film 11 made of a synthetic resin is put at a part 14 where an aperture 3 in one face 5 of a glass plate 1 should be formed so as to lay the rubber plate 13 of the bonded member 4 between the glass plate 1 and the resin-based film 11. The aperture 3 is formed at the part 14 by relatively moving the diamond drill 2 which is driven by rotation in Z direction toward the glass plate 1 on which the bonded member 4 is put, and the diamond drill 2 is removed from the aperture 3 after the aperture 3 is formed.