The (BaxMg)2/(x+1)Al10O17: Eu2+ (0.6≤x≤1.2) (BAM) phosphors with different Ba/Mg ratio were successfully prepared by solution combustion method at 600 ℃. The influence of Ba／Mg ratio on the crystal structure and luminescent properties of the obtained samples were mainly investigated. The results show that the samples are of single phase, and the lattice parameters increase with the Ba/Mg ratio. Moreover, the intensity of the fluorescence of the resulting phosphors increases obviously with the Ba/Mg ratio, and the maximum emission intensity is reached at Ba/Mg=0.9 . However , as Ba／Mg ratio was higher than 0.9, the intensity of the fluorescence is reduced reversely. Furthermore, with the decrease of the Ba/Mg ratio, the emission peak of the phosphors shifts to the longer wavelength due to the crystal field enhancement and electron cloud expansion. Moreover, the luminescent property of BAM phosphor is considerably influenced by Eu2+ concentration. In an appropriate Eu2+ doping concentration range, the intensity of the fluorescence of BAM increase obviously with Eu2+ doping concentration and reaches a maximum, owing to more luminescent centers and faster energy transfer between Eu2+ ions. However, as the Eu2+ doping concentration is higher than a critical value, the intensity of the fluorescence is reduced reversely, due to the concentration quenching as the energy transfer rate between Eu2+ ions exceeds the emission rate.