In this paper, the composition, physical chemistry properties and preparation techniques of Tb2O3-doped borosilicate and phosphate glasses for Faraday rotation glasses are studied. Experimental results show that the Verdet constant changes with the variation of terbium ions concentration, when the Faraday rotation glass contains 20% (mol) of Tb2O3 the Verdet constant is -0.0030 min/A/m·cm. Using the special preparation techniques large size sample with high quality could be fabricated in platinum crucible.