dimensional metallic nanostructures were fabricated by self-assemb ling silver nanoparticles on 3-Aminopropyltrimethoxysilane (APS)-modified glass substrate.Surface enhanced Raman scattering (SERS) is investigated f or Rhodamine 6G molecules deposited on the prepared 2-dimensional substrates.The experimental observation shows that the fabricated substrate presents strong Raman enhancement,and the enhanced factor is about 10^7times with 532nm excited las er beam.Higher intensity of local electric field and stronger coupling of surface plamon resonance in cluster silver nanostructur e are obtained more effectively.The results suggest that a metallic substrate with 2-dimensional nanostructure can produce good Raman enhancement,which is important for studying the mechanism and expanding the potential applications of enhanced Raman effect.