Building curtain wall structure capable of adjusting mounting perpendicularity

The invention discloses a building curtain wall structure capable of adjusting mounting perpendicularity. The building curtain wall structure comprises a building curtain wall body, a decorative layer, a curtain wall plate, sound absorption holes, a mounting framework and screws, the decorative layer is arranged on the front side of the building curtain wall body and connected with the curtain wall plate through hook and loop fasteners, the top end of the curtain wall plate is fixedly connected with a tensioning plate on the upper part of the mounting framework through tensioning bolts, the lower end of the curtain wall plate is in clamped connection with a splicing table at the lower end of the mounting framework through a splicing plate on a splicing groove, an opening is formed in the middle of the mounting framework in a penetrating mode, supporting strips arranged in a crossed mode are welded to the interior of the opening, and fixing holes used for fixing the mounting framework are formed in the four co