Abstract: Polyethyleneimine / graphene(PEI/GO) nanocomposites were prepared by the green reduction method and the feature that amino-groups are rich in PEI chain of the macromolecular polymer. Then, the AgNPs/PEI/GO complexes were prepared by immobilizing silver nanoparticles on the surface of PEI/GO nanocomposites utilizing the reducing effect of amino-group on silver ion and the protection effect of silver nanoparticles. The influences of reaction time and concentration of silver ions on the prepared silver nanocomposites were studied. The prepared AgNPs/PEI/GO complexes were characterized using infrared spectroscopy, UV spectra, XRD, TEM, and other means. The characterization results showed that PEI was successfully modified to GO surface， Ag⁺ was reduced using green and clean technology and immobilized on GO surface. The AgNPs/PEI/GO nanocomposites have good electric conductive properties and perfect crystal phase