Fabricated building bearing connecting piece

The fabricated building bearing connecting piece is applied to the technical field of fabricated buildings, by arranging a mounting structure and a fixing structure, when the fabricated building bearing connecting piece is used, a fixing base is driven by a mounting frame to be placed on the inner wall of a cross beam, a clamping block is clamped to the inner wall of the mounting frame, and then an inclined block is placed on the inner wall of the mounting frame; the fixing blocks rotate on the surfaces of the studs to fix the positions of the inclined blocks, then the fixing beams drive the assembling assemblies to move, the assembling assemblies are inserted into the inner wall of the fixing base, the rotary knobs rotate on the inner walls of the fixing base and the assembling assemblies, the positions of the assembling assemblies are fixed, the assembling process is convenient and fast, and the assembling efficiency is improved. By arranging the reinforcing mechanism, the fixing beam can drive the mounting