Composite steel–concrete deck slabs are used in floor construction in steel-framed buildings where the connection between steel beam and the concrete slab through shear connectors exploits the best combination of each component. The behavior of composite steel deck slab is investigated based on different parameters such as presence of embossments, shape and thickness of profile sheets, thickness of concrete slab, loading constraints, steel–concrete contact and end anchorages. Performance is evaluated on the basis of load carrying capacity, end slip, and the end anchorage contributions to the behavior of composite deck slabs. The finite element analysis is done using ANSYS software by varying different parameters and the influence factor of each parameter in the performance of composite deck slab is found by regression analysis and finally experiments are conducted to validate the study. Based on the parameters studied the trapezoidal sheets of 1.2 mm thickness with stiffeners shows a better performance.