We report, for the first time, white light emissions of a single Sr,2,MgSiO,5,:Eu,2+, material. The emission spectrum consists of two bands, located at 470 and 570 nm, respectively. The two bands have different fluorescence lifetimes, being attributed to Eu,2+, ions substituted by different Sr sites. White light is generated by mixing the two colors. The excitation spectra of the two bands are both distributed within UV range. A white LED has been fabricated employing the white phosphor and a near UV of 400 nm InGaN chip. As the forward-bias current is 20 mA, the color temperature is 5664 K, the color coordinates(CIE) are ,x,=0.33,y,=0.34, the color rendering index(CRI) is 85% and the luminescent intensity is 8100 cd/m,2,. Experiments demonstrate that CIE and CRI of the white LED change slightly with the variation of forward-bias current, indicating that the phosphor presented in this work is a promising material for use in new generation white LED lighting.