The coupled wave equation in the optical fiber based on stimulated Brillouin scattering (SBS) is discretized, the light storage process via SBS is solved by MATLAB, and the effect of the temporal line profile and spectral line profile of the control-light on the light storage is studied. The read pulse and write pulse play a different role in light storage, but the differences of these can not be found in the theory analysis. The calculations show that the differences of the temporal line profile of the control pulse do not obviously affect the stored results. The chirped Gaussian pulse and rectangular pulse can get the best storage because of their wide spectrum.