Abstract The Ba 2 Mg(PO 4 ) 2 :Eu 2+ , Mn 2+ phosphor is synthesized by a co-precipitation method. Crystal phase, morphology, excitation and emission spectra of sample phosphors are analyzed by XRD, SEM and FL, respectively. The results indicate particles synthesized by a co-precipitation method have a smaller size in diameter than that synthesized by conventional solid-state reaction method. Emission spectra of BMP:Eu 2+ , Mn 2+ phosphor show a broad blue and a broad yellow emission bands with two peaks at about 456 nm and 575 nm under 380 nm excitation. An overlap between Eu 2+ emission band and Mn 2+ excitation band proves the existence of energy transfer from Eu 2+ to Mn 2+ . Emitting color of the BMP:Eu 2+ , Mn 2+ phosphor could be tuned by adjusting relative contents of Eu 2+ and Mn 2+ owing to energy transfer formula. Therefore, BMP:Eu 2+ , Mn 2+ may be considered as a potential candidate for phosphor for near-UV white LED.