Using the data of thunderstorm days recorded by the 9 weather stations in Langfang of Hebei province from 1964 to 2011,the temporal-spatial distribution characteristics and periodicity features during the recent 48 years are analyzed by means of mathematical statistics,linear trend fittings and wavelets analysis.The regionalization of thunderstorm probability of different number of days is worked out by use of information diffusion theory.The results show that the interannual thunderstorm variability is significant and the annual thunderstorm days has a decreasing trend.The numerical value of decreasing days is about 2d per decade.The seasonal variation exhibits a uni-peak-type and the thunderstorms mainly occur from April to October,while 74.5% of thunderstorms occur in the three-month of June,July and August during the summer.The thunderstorm days in north-central areas are significantly more than that in south.The variation periods are stable and exist across the whole region in most areas when they are more than 10a,but the short period of 3 to 5 years mainly happens before the 1990s.With the increase of the thunderstorm days,the high probability areas move north.Some of the central areas will be high probability areas when the thunderstorm days become abnormally high.