To compare the actual luminescence intensity of different samples acquired in a wide wave number range using FTIR emission spectroscopy, a feasible and convenient correction scheme of calculated emission spectroscopy instrument function was proposed. The feasibility, limitations and matters need attention were discussed in detail. Based on those schemes, the luminescence intensities of a group of photoluminescence samples cover a wide wave number range have been corrected and compared with original data. Consistent results were gained. The validity of the schemes was confirmed.