Based on the historical records of locust outbreaks in Jiangsu Province,this study established the database of locust plague from Song to the Republican period and reconstructed locust outbreak grades sequence and 10 - year scale frequency sequence,aiming to explore the spatiotemporal characteristics,the linkage or relationship between locust outbreaks and lake /river environmental change and climate change. Results show that,282 locust years occurred in Jiangsu province during this period,with an average frequency of 2. 8a /10a; the locust shows an overall increase trend; there are seven high - incidence periods and seven low - incidence periods. North and south Jiangsu regions present almost the same frequency change and rise - fall trend,with a few more serious locust events in the south. Wavelet analysis indicates that,historical locust outbreaks do not have periodicity during this period. The spatial distribution of locust outbreaks displays the an obvious attachment nature of the locust plague to water:the plagues gather relatively more in the areas around lakes and rivers,with a southward and eastward diffusion trend. Locust plague is insignificantly affected by temperature change but has a strong relationship with drought. Fine and retrospective analysis of different generations of locusts plague are required to be conducted in further researches.