In this study, we present a comprehensive investigation into the surface-enhanced Raman scattering spectra of M-aminobenzoic acid adsorbed on silver nanoparticles on dried silver-coated filter paper. In order to gain in-depth insights into the adsorption behaviors of M-aminobenzoic acid, five distinct models were meticulously established. The Raman spectra of these models were calculated using the density functional theory - B3PW91 method with the LANL2DZ basis set. A comparison of the theoretical values with the experimental results revealed a remarkable degree of agreement. This finding serves to validate the rationality of employing a simplified model to depict the surface-enhanced Raman scattering phenomenon. The results indicate that on the dried silver-coated filter paper, M-aminobenzoic acid molecules predominantly adsorb onto the surfaces of silver particles via carboxyl and amidogen groups, with the benzene ring plane being vertical or nearly vertical to the silver particle surface. Indeed, a multitude of ad-sorption models coexist for M-aminobenzoic acid on silver nanoparticles, among which model c has a relatively higher probability of occurrence. This research offers valuable insights into the interaction mechanism between M-aminobenzoic acid and silver nanoparticles, providing a theoretical basis for related applications in surface-enhanced Raman scatterning-based detection and surface science.