The single crystals of KCaCl3∶Ce doped with different mole fraction of Ce3+ ion concentrations(1%, 2%, 4%, 6%, 8%) were successfully grown by Bridgman method. The crystals belong to orthorhombic system, the cell parameters have been determined as: a=0.756 0 nm, b=1.048 2 nm, c=0.726 6 nm. The melting point measured by the thermogravimetric analyzer are 740 ℃. The photoluminescence spectrum, decay time, X-ray excitation emission spectrum and optical transmittance were characterized. The transmittance shows it has good optical transmittance in visible band. The photoluminescence spectra of KCaCl3∶Ce exhibit the two broad emission peaks locate at 358 nm and 378 nm, corresponding to Ce3+5d1→2F5/2 and 5d1→2F7/2 energy level transition; the scintillating decay time of the KCaCl3∶Ce is about 30 ns under ultraviolet excitation. Moreover, all crystals exhibit excellent X-ray liminescence properties under X-ray excitation.