The invention provides a shear force connecting piece. The shear force connecting piece comprises a pin bolt steel bar (1), a pin bolt steel bar mounting plate (2) and a perforated steel plate (3), wherein the pin bolt steel bar mounting plate (2) is provided with a mounting through hole, the pin bolt steel bar (1) is arranged in the mounting through hole, the pin bolt steel plate mounting plate (2) is vertically arranged on an upper surface of a steel structure (4), the perforated steel plate (3) is provided with at least one through hole, the pin bolt steel bar mounting plate (2) verticallypenetrates through the through hole, and the perforated steel plate (3) is arranged above the steel structure (4). According to the shear force connecting piece disclosed by the invention, accurate butt joint of the reserved hole site of a concrete plate and a steel beam connecting piece is realized, the overall performance of the concrete plate after the reserved hole site is guaranteed, the action of the shear force connecting piece is fully exerted, and the steel structure and the concrete structure are connected into a whole to work together.