The Raman scattering coefficients of the fundamental ν1(992 cm-1) ofC6H6 and the fundamental ν１(656 cm-1) of CS2 changed dramatically with relativeconcentration of the binary solution of CS2 and C6H6. The Raman spectra of thebinary solution with different relative concentrations were measured. The resultsshow that both the ν1 fundamentals intensities changed dramatically with therelative concentration of the solution and the fundamental ν1 of C6H6 has littleeffect on the Fermi resonance ν１＋ν６～ν８. On the contrary, the change inthe ν１ fundamental intensity of the CS2 changed which has more effect not onlyon the Fermi resonance ν１～２ν２ but also on the ν２ fundamental. In thisreport, the experimental results were analyzed based on the J. F. Bertran theoryand group theory.