The invention discloses a centralized machining center for building formed steel bar products, and belongs to the technical field of steel bar product machining. The centralized machining center for the building formed steel bar products comprises an upper housing, a lower housing, an adjusting assembly, a cutting assembly and a limiting assembly, wherein the lower housing is arranged below the upper housing; the adjusting assembly is arranged on the inner side of the front end of the upper housing; the cutting assembly is arranged in the middle of the adjusting assembly; and the limiting assembly is arranged on the inner side of the front end of the lower housing. According to the centralized machining center, the adjusting assembly, the cutting assembly and the limiting assembly are arranged between the upper housing and the lower housing which are in clearance fit, steel bars are pressed one by utilizing the limiting assembly, so that the cutting assembly for adjusting the cutting position through the adjusting assembly can be used for carrying out length cutting on the steel bars; and the centralized machining center is reasonable in structural design and high in automation degree, the cutting is time-saving and labor-saving, the safety risk that the traditional manual handheld cutting is needed is avoided, and the machining efficiency of the steel bar products can be improved.