The photoluminescence spectra of the Y-type zeolite modified with titanium ions and Ti-silicalite-1 have been investigated by varying the excitation energy. A three-dimensional image of the photoluminescence shows that the peak attributed to tetrahedral titanium oxide species is present at the excitation energy around 200-210 nm, which is consistent with the UV absorption of the samples. The technique enables the distinction of the photoluminescence of the titanium species from that of silicate species.