The red-emitting phosphors of CaBi sub(2)Ta sub(2)O sub(9 ): Eu super(3+) and CaBi sub(2)Ta sub(2)O sub(9 ): Eu super(3+)/La super(3+) were prepared by the high-temperature solid-state reaction method. By using X-ray diffraction, the structural properties of powders have been analyzed. The photoluminescence excitation and emission spectra of CaBi sub(2)Ta sub(2)O sub(9 ): Eu super(3+), and the dependence of luminescence intensity on doped Eu super(3+) ions concentration were investigated. The results show that CaBi sub(2)Ta sub(2)O sub(9 ): Eu super(3+) can be efficiently excited by near-UV and blue light to realize an intense red luminescence (615 nm) corresponding to the electric dipole transition super(5)D sub(0) arrow right super(7)F sub(2) of Eu super(3+) ions. Meantime, an enhancement of photoluminescence intensity was observed in La super(3+) ions doped CaBi sub(2)Ta sub(2)O sub(9 ): Eu super(3+) phosphors. The CIE chromaticity coordinates of CaBi sub(2)Ta sub(2)O sub(9 ): Eu super(3+) and CaBi sub(2)Ta sub(2)O sub(9 ): Eu super(3+)/La super(3+) are (0.6121, 0.3835) and (0.6141, 0.3821), corresponding to the hues of orange-red. The phosphors can be suggested to be a potential red-emitting phosphor for the application on white LEDs under irradiation of near-UV or blue chips.