Eu single doped and Eu,B co-doped SiO_2 xerogels and films were prepared by sol-gel process,using tetraethoxy silane,boric acid and aluminium nitrate as precursors,europium nitrate as the dopant.The influence of B ions and annealing temperature on luminescent properties of phosphors has been studied using fluorescence spectrum,X-ray diffraction and IR spectrum.The phosphors showed prominent luminescent in red.When heated up to 500℃,the emission spectrum showed six characteristic emission peaks,due to the electronic transition of ~5D_0→~7F_J(J=0,1,2,3,4)for Eu~(3+) respectively and the electronic transition of ~5D_0→~7F_1 was splited two peaks.When B ions were introduced to the Eu doped samples,the red Eu~(3+) emission was enhanced remarkably.This is because Si-O-B bonds were formed in the luminescent materials,and the symmetry of network was breached.Annealing changed the network structure and reduced the content of-OH and water,which benefits intensity of emission from Eu~(3+).The intensity of emission from