It is one of the important directions in the global change research that the reconstruction of time serial of paleoflood and the flood disaster events which can provide the basic data for regional drought forecast. In this research,fluvial floodplain deposition from GJ profile were processed to reconstruct the Ganjiang river flood event by ultra-high resolution recording for the last 130 years based on the time scale of AMS-~(14) C + ~(137) Cs /~(210) Pb and a number of size indicators and parameters such as average particle diameter,median diameter,sand and coarse silt components,cumulative frequency curve and probability curve. With the ultra-high resolution recording,we can compare the abnormal flooding in Ganjiang river region to the sunspot and ENSO. The results show: the sediments of the Ganjiang River from the past 130 years have been stratified obviously,the grain size characteristics of the sediments in non-flood season are different from those in the flood season. So,18 different sizes of flood disaster events had been identified. The results of MK test and cumulative anomaly analysis showed that there were two abrupt changes in 1954 and 1977; 1882-1911 and 1943-1977 are drought and flood fluctuations; 1911-1943 belong to flood more than drought and 1977-2014 belong to drought more than flood. Wavelet analysis shows that the period of drought and flood in Ganjiang river basin are 4 years,16 years,42 years and 74 years. The results of cross-spectrum analysis show that the period of drought and flood in Ganjiang river basin is related to the period of sunspot in 11 year scale,and it runs through the whole research period. The correlation between drought and flood cycle and ENSO events in the Ganjiang river basin on the 2-8 year scale is likely to be related to the 2-7 year cycle of ENSO.