Abstract:Nuclear power stations do not release greenhouse gases, such as carbon dioxi de, and thus make the contribution to reducing the carbon density of energy prod ucts. Therefore, it gets increasingly attentions of people. In view of analyzing the weather and climate environment around nuclear power station area, the study of extratropical cyclones that influence Jingyu n uclear power station area has been made. The result shows: there were 111 extrat ropical cyclones totally that influence Jingyu area from 1949 to 2007. There wer e 41 years that were influenced by the extratropical cyclones (approximately 2/3 ). The extratropical cyclones that influence Jingyu area and produce strong rain fall, mainly occurred in June, July and August, more than half of them were in J uly. Most of the extratropical cyclones that influence Jingyu area were Northeast cyc lone, which is 65% of the total; what followed behind it were Mongolian cyclone and North China cyclone; Jianghuai cyclone is the last one. Extratropical cyclon es cause severe rainfall and gale disasters, some weather disasters are extremely seri ous. Of them a case study of the extratropical cyclone was also made from synoptic analysis.