Vibration Spectrum Study on the Construction of CaO-Al_2O_3-SiO_2 Glass Ceramic He Feng; Cheng Jinshu; Xie Junlin; Xu Chao(Lect., Silicate Engineering Research Center, WUT, Wuhan 430070,China.) The construction of CaO-Al2O3-SiO2 glass-ceramic was studied by IR and Raman spectrum. And the influence of composition on construction were analyzed by change the content of CaO,Al2O3, B2O3 insteaded of SiO2 in the base glass. Then the coordination number of Al3+, B3+ were discussed from vibration spectrum and theoretical analysis, and the same conclusion was Obtained.Kaywords: IR spectrum, raman spectrum, CaO-Al_2O_3-SiO_2, glass-ceramicIR spectrum;raman spectrum;CaO-Al_2O_3-SiO_2;glass-ceramic