▎ 摘　　要

NOVELTY - The substrate has a porous skeleton metal part formed with a graphene thin film whose surface is deposited with nano-silver particles. A three-dimensional porous metal framework is provided with a three-dimensional porous skeleton metal part that is made of nickel foam. A nano-silver granule is provided on a dry surface of a graphite substrate. USE - Surface-enhanced Raman spectroscopy substrate. ADVANTAGE - The substrate reduces background fluorescence, and improves stability and adsorption force. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a surface-enhanced Raman spectroscopy substrate preparing method. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram illustrating a surface-enhanced Raman spectroscopy substrate preparing method.