Resonance Rayleigh scattering(RRS) and resonance non-linear scattering(RNLS) were a new technology developed in 1990s.Due to its remarkable characteristics of high sensitivity and simple operation,this method has received much attention.In this thesis,taking antiviral and cardiovascular drugs as research objects,we developed some new systems and new methods for the determination of them by RRS and RNLS methods.The spectral characteristics were discussed combining with the absorption and fluorescence...