Different from the current measurement methods for Young’s modulus of metal materials, the Young’s modulus of intermetallic compounds (IMCs) was obtained by a non-destructive method based on Brillouin light scattering (BLS) in this paper. The single-phase regions of CoSn, CoSn₂, Cu₃Sn and Cu₆Sn₅ phases required for BLS test were obtained by applying long-term thermal stabilization through adjusting temperature gradient. The volume fractions of the corresponding phases near the solid-liquid interfaces of the samples were 98.3%, 94.2%, 99.6% and 95.9%, respectively. All the independent elastic coefficients and Young’s moduli of IMCs were obtained by Brillouin scatterometer. The Young’s moduli of CoSn, CoSn₂ and Cu₃Sn and Cu₆Sn₅ phases obtained through the present method are 115.0, 101.7, 129.9 and 125.6 GPa, respectively, which are in a good agreement with the previous experimental results. Thus, the effectiveness of BLS in measuring the Young’s moduli of IMCs in bulk alloys is confirmed.