The ZnO∶Eu3+ crystal was prepared via coprecipitation with the starting materials Zn(OOCCH3)2·2H2O, Eu2O3 and NaOH. The X-ray diffraction patterns show that the samples are hexagonal wurtzite structure, No diffraction peaks from europium oxides are detectable. Comparing the ZnO and ZnO∶Eu3+ Raman spectra, the new local vibrational modes were observed in ZnO∶Eu3+. These phenomena show that Eu3+ ions have entered the lattice by doping. The SEM analysis exhibits that ZnO nanoparticles prepared by coprecipitation become smaller with Eu3+ doping. The excitation and emission spectra of ZnO∶Eu3+ sample present a efficient energy transfer process between ZnO and Eu3+ ions.