<p>Subducted sediments, as an integral part of subducted slab, can strongly influence the chemistry of volcanic arc lavas, and clarify the relationship between subduction input and arc output, which is the focus of the subduction factory theory in the context of plate tectonics. In this study, we analyzed major and trace element compositions of the subducting sediments from two sites [Deep Sea Drilling Program (DSDP) Site 495 and Ocean Drilling Program (ODP) Site 1039] at the different locations along the Middle America Trench. The results showed that the sediments from these two sites are mainly composed of terrigenous material, carbonate components, and biogenic silicate in different proportions. In order to reduce the effects of the variations in subduction topography on the chemical composition of sediments, we recalculated the bulk subducted sediment composition at northern and southern Central America subduction zone, and identified the Nicaragua Fracture Zone as the dividing line for northern and southern subducting sediments at Middle America Trench. Compared to the global trench subducting sediment, both the subducting sediments from northern and southern Central America subduction zone exhibit lower contents of terrigenous material-controlled elements and are more enriched in the biogenic components-controlled elements. We suggested that the variations in both chemical compositions for sediments and subduction angles are responsible for the different contributions of subducting sediments to volcanic arc magmatism in the northern Central America.</p>