Based on the lightning location system data of Jiangsu Meteorological Bureau from 2006 to 2010,this paper analyses the seasonal,monthly and daily variations,and spatial distribution of lightning frequency,and the distribution interval of lightning intensity over the five representative areas (Nanjing,Suzhou,Xuzhou,Nantong and Lianyungang) in Jiangsu Province,which can reflect the distribution differences and characteristics of lightning activity.Results show that the negative lightning frequency are more than the positive in the five areas in four seasons.The monthly lightning frequency changes obviously in each area,and the peak appears in Nanjing in July and in the other areas in August.The daily variation of lightning frequency is obvious in each area,and the peak appears at 14:00-17:00 BST.The spatial distribution of lightning frequency are unbalanced in the whole province,and there are more (less) lightning in the southern (northern and central) Jiangsu,with many lightning density centers in parts of Nanjing,Zhenjiang and Changzhou.Most of lightning intensity centralize 20-50 kA,while there are very few for the lightning intensity more than 100 kA.Moreover,the positive lightning intensity is stronger than the negative.