With the rapid development of optical fiber and solid-state laser, more and more researchers began to add Nd3+ to the borate glass for tuning for commercial application. In this paper, the glass with different concentration of Sb3+ was prepared. Nd3+ and Sb3+ were successfully doped into the glass network. Subsequently, the absorption properties of boric acid glass samples were measured. The results show that increasing the concentration of Sb3+ doping can adjust the absorption properties of boric acid glass.