A series of new red-emitting Sr3Y2-xTeO9∶xEu3+ phosphors were prepared by high temperature solid-state method, and the phase structure, luminescent performances, decay life and thermal stability of Sr3Y2-xTeO9∶xEu3+ were studied. The results show that new red-emitting Sr3Y2-xTeO9∶xEu3+ phosphors can emit intensive red light under near-ultraviolet or blue light excitation, and it demonstrate that the concentration quenching mechanism is attributed to the dipole-dipole interaction between Eu3+ ions. The color coordinates of these phosphors with different Eu3+ concentrations are in the red spectral region. The temperature-dependent luminescences emission spectra reveal that these phosphors show good thermal stability. The optimal doping concentration of Eu3+ is x=0.34 for Sr3Y2-xTeO9∶xEu3+ phosphor, and its fluorescence decay lifetime is deduced to be 0.619 ms. These overall results show that new red-emitting Sr3Y2-xTeO9∶xEu3+ is promising phosphor applied in phosphor-converted near UV-excited white light-emitting diodes.