The results of Raman measurement on KCl:Pb2+ and Rb01:Pb2+ single crystals after long X-irradiation at 77K are reported in this paper. Based on the polarized Raman data and by using so-called Behavior Type analysis method, the Raman signals with frequency shift 284cm-1 in KCl:Pb2+ and 270 cm-1 in RbCl: Pb2+ are assigned to the inelastic scattering of HD center with a dynamical mode C1h(010):A'.