Flooding is a natural calamity that can caused great loss. Flooding hazard mapping is an effective tool for managingflooding to reduce the destructivity. In this paper, we suggested a new method to map the flooding hazard for alluvial plain withmulti-temporal remote sensing images and lake level records. 9 images gained at different date for Poyang Lake Region were used topickup the inundation extent with different lake level, and the annual and monthly exceedance probability of lake level for Poyangwas estimated by sorting all lake level records. The boundary of inundation extent from remote sensing images was regarded asisolines valued as exceedance probability for the lake level happened on the image taken time. With the interpolation processprovided by ArcGIS software, the flooding hazard were mapped for Poyang Lake Region.