▎ 摘　　要

Graphene and graphene/siver nanocomposites were synthesized by the reduction process in a facile one pot method. Raman spectroscope, TEM, UV-vis and XRD were used to characterize the composites. The results indicate that the silver nanoparticles were successfully composited on the graphene sheets and the size of silver particles range from 10 to 20 nanometers. In Raman characterization, the intensity of the composite speaks would increased with the ratio increasing of silver nitrate to graphene oxide, and the SERS reached the most obviously when the ratio was 3:1. However, the Raman intensity will decrease when the silver nitrate was too much.