We report a new use of stimulated Brillouin scattering(SBS) to compensate laser phase aberration caused by the face of damaged laser rod which is simulated by the glass corroded by HF.The results of output energy and pulse widths and the three-dimensional distribution of far field facula under different conditions were given.The output energy of SBS cavity will reach 50 mJ,the fluctuation of it is about 10%.The experiments indicate it is a easy and validity method to improve the quality of the output beam.