In this paper. we studied the hybrid surface plasmons excited by the heterogeneous composite structure of Au nano-array and Ag film via surface enhanced Raman scattering (SERS). By using the finite difference time domain method. the surface plasmon resonances are adjusted to the excitation wavelength of Raman scattering. https://www.danddcollectiblers.shop/product-category/laundry-detergent/