Abstract: By studying the cloud-to-ground (CG) data from 2007 to 2012 and the observational data of thunderstorm of six stations in Huai’an during 1961 to 2012, the climatic characteristics of the lightning are analyzed. The results show that the numbers of lightning in one day have a close relationship with their activity intensity and frequency on the same day. Seasonal variations of lightning are unimodal distribution and the extreme value always appears in July or August. The lightning activities occurred more frequently in southern regions than in northern regions. Lightning protection should be an important task particularly in regions surrounding the south of Hongze Lake, Xuyi and Jinhu.