Composite Beams have various effects as one unit structural member of a steel beam and a Reinforced Concrete Slab. In Composite Beam, install a Shear Connector to resist horizontal shear on an interface between steel beams and reinforced concrete slabs. Unified Composite beam(with shear connector) has various structural advantages because concrete slabs are used to part of cross section of beams. Also when applying to the Deck Plate Slab, vertical Bars are installed at the ends of steel truss girder for insure safety during the construction. Therefore, this study attempts to examine the ways to develop and utilize a New-Shaped Shear connectors which is functioning as vertical bars and also securing a higher shear capacity using new-shaped shear connector instead of Used-Stud Connector.