Abstract: Glass formulation design is particularly important in laser glass preparation processes according to predetermined qualification. Traditional calculation systems of physical properties of inorganic oxide glass were outstanding representatives, but those systems usually do not involve glass spectral characteristics. The absorption properties of glass were calculated by considering the intrinsic vibration frequency and amplitude of doped laser glass and considering the Sellmeier equation and dispersion curve together. If the formulation design is changed based on the calculated glass spectrum performance, it could greatly shorten the development cycle and ensure quickly to find an optimal formulation in experiments. It is proved in the experiments that these formulations could be used to generate favorable glass states after the cooling process.