BaMg 2 Al 6 Si 9 O 30 :Eu 2+ phosphors are synthesized by the solid-state reaction method and their photoluminescence (PL) properties are investigated. The ultraviolet emission originates from Eu 2+ (I) substituting for Ba 2+ sites, whereas the blue emission is attributed to Eu 2+ (II) substituting for Mg 2+ sites. With increasing Eu 2+ doping concentrations, the blue emission band shifts to long wavelength and the PL intensity ratio of blue to ultraviolet emission increases. Energy transfer between the two different Eu 2+ ions is analyzed by photoluminescence excitation and emission spectra, and lifetimes. Results indicate that the emission spectra can be tuned by changing Eu 2+ contents. We have also demonstrated that BaMg 2 Al 6 Si 9 O 30 :Eu 2+ phosphor is a kind of potential phosphor for fluorescent lamps.