With the purpose of investigation on the visible emission properties of Tm<sup>3+</sup> ions, a Tm<sup>3+</sup>-doped Y<sub>2</sub>O<sub>3</sub> transparent ceramic was fabricated by sintering at 1800 °C for 20 hour with a vacuum degree of 1x10<sup>-3</sup> Pa. 3 at% ZrO<sub>2</sub> was introduced as the sintering aid and the average grain size was measured to be 22 μm. The optical transmittance of the ceramic achieved 76.3 % at 1 μm. The PL spectra at room temperature and low temperature were measured under 361 nm excitation. The ~453 nm emission bands were observed and the luminescence mechanisms were discussed. It was
found that the Tm: Y<sub>2</sub>O<sub>3</sub> transparent ceramic have the potential to be used in white LED packaging structure.