Nd-Bi codoped zeolites were prepared by an ion-exchange process, and the optical properties were investigated by photoluminescence (PL) and PL excitation spectra, and decay time measurements. The results show that the NIR emission of ${\mathrm{Nd}}^{3+}$ ions is significantly enhanced by the introduction of bismuth in codoped samples, and the lifetime reaches $246\mathrm{\mu s}$ . It is also observed that NIR-active Bi acts as a sensitizer of ${\mathrm{Nd}}^{3+}$ ions. The energy transfer efficiency is also estimated. The peculiar optical properties make Nd-Bi codoped zeolites promising for potential application in biological probes.