25.4 mm diameter crystals of CeBr3 and three analogues doped with 0.1%, 0.2% and 0.5% of Sr2+in molar ratio were grown by the vertical Bridgman method. The grown crystals were processed into 25.4 mm diameter wafer with a thickness of 10 mm and characterized by fluorescence spectra excited by UV light and X-ray as well as multi-channel analysis with 137Cs source. Results show that the emission bands of the crystals under X-ray excitation are slightly red-shifted by Sr2+ doping, and with the increase of Sr2+ doping content, the energy resolution of the crystals are successively improved, while the light yield are gradually reduced. The CeBr3 crystal doped with 0.5%Sr2+ exhibits the best energy resolution of 3.83%@662 keV. However, high Sr2+doping also causes difficulty in crystal growth. A doping content of 0.2% is considered appropriate with regards to both scintillation property and crystal growth availability. An encapsulated CeBr3∶0.2%Sr crystal with dimension of 25.4 mm×25.4 mm is obtained and the energy resolution is 3.92%@662 keV.