Fabricated building curtain wall supporting structure

The invention provides a fabricated building curtain wall supporting structure, belongs to the technical field of curtain wall installation, and solves the problems that a supporting structure in the prior art is low in bearing capacity and cannot well transmit loads to a wall body. The connecting structure comprises a connecting assembly installed on a wall body, the connecting assembly comprises a supporting flitch plate attached to the wall body, a vertical plate and a supporting plate abutting against the bottom of the vertical plate are vertically installed on the supporting flitch plate, an adapter assembly is connected to the vertical plate, an installation assembly is arranged on the adapter assembly, and a keel is installed on the installation assembly. The connecting assembly is fixedly installed on the wall, the supporting flitch plate on the connecting assembly is attached to the wall, loads can be well transmitted to the wall, the supporting flitch plate is connected with the switching assembly t