Compared with the spectrum test methods, such as the Raman spectroscopy, the Brillouin spectroscopy can reflect the mechanical properties including elasticity coefficient. By using a single-mode 532 nm laser as the excitation source, and a scanning multi-channel tandem Fabry-Perot interferometer to detect the Brillouin light, a confocal Brillouin spectrum test system has been successfully built. This system uses the socket port means with telecommunication function to acquire the photon counts and realize spectrum acquisition and display. This means is expected to be further applied to large-scale remote linkage setup related to confocal Brillouin imaging, and is a prosperous instrument design direction. Based on this confocal Brillouin spectrum test setup with socket programming, the Brillouin light of resin glass, silicon rubber and glass are obtained, and the corresponding longitudinal elasticity coefficients are calculated.