Abstract: Fluvial deposited material can record climatic information and paleohydrological information. On the basis of field research, systematic sampling, testing the grain size, mineral composition, and pH value of ZJDZ section, sedimentary records of paleoflood in this section can be divided into three sections. Especially the grain size parameters and the pH value in the second section fluctuate severely, representing different periods and different scales of flood, and the high frequency. Combined with six ¹⁴C data, a time scale is established: there are many large flood events occurred in the Shagou River during 10.9-4.0 kyr B.P. period, of which 20 times of large-scale floods occurred during 10.9-7.0 kyr B.P. period, flood recurrence interval is 0.40 kyr, which the flood-scale increase successively during 10.9-9.0 kyr B.P., during the 9.0-7.0 kyr B.P. period, the flood-scale has reduced; during the 7.0-4.2 kyr B.P. period, there are at least 4 to 5 large-scale flood, the flood recurrence interval is 0.71 kyr. Contrasting to the existed climate data, it is discovered that flood events occurred mainly in the background of relatively humid climate, high-frequency flood events are related to the frequent fluctuation in wet and dry climate.