The utility model discloses a glass curtain wall opening window which comprises window glass and a glass rib. The upper portion of the window glass is connected to the glass rib through a moving hinge mechanism. An opening window push-pull device is hinged to the lower portion of the window glass and further movably connected with the glass rib. The moving hinge mechanism comprises a connected claw fixedly installed on the glass rib and a connected head directly connected to the upper portion of the window glass. The connected head is mutually hinged to the connected claw through a connection rod. The opening window push-pull device comprises a swinging rod and a push-pull rod capable of being locked. One end of the swinging rod is hinged to the connected head installed on the lower portion of the window glass and the other end of the swinging rod is hinged to the push-pull rod. The push-pull rod is connected into a locking sleeve in a penetrating and push-pull mode. The locking sleeve is fixedly installed on the glass rib and provided with a locking bolt. The glass curtain opening window is not only simple in structure and convenient and flexible to operate and use, but also capable of solving the problem that a point supported glass curtain wall can not be ventilated.