The invention discloses an attaching mechanism for a super high-rise construction elevator. The attaching mechanism comprises wall attaching parts, guiding rail parts and rolling parts. One end of each wall attaching part is fixedly connected with an elevator standard knot, and the other end of each wall attaching part is fixed with each guiding rail part through bolts. One end of each rolling part is fixedly connected with an inner frame of an ejecting formwork through bolts, and the other end of each rolling part is connected with each guiding rail part in a rolling mode. When the ejecting formwork ejects, the wall attaching parts and the guiding rail parts are fixed, the rolling parts roll on the guiding rail parts and eject along with the ejecting formwork, the construction elevator can rise to a top platform of the ejecting formwork at a time, and the elevator can operate normally in the ejecting process of the formwork. According to the attaching mechanism, the rolling parts do not need to be dismounted before and after the ejecting formwork ejects, only part of the wall attaching parts and the guiding rail parts needed by lifting at each time are transferred and installed again, installation efficiency is greatly improved, and construction progress is accelerated. The invention further provides an ejecting method for the super high-rise construction elevator.