Through extensive field investigation, paleoflood stagnant zones were found to occur in layers of the loess-paleosol profiles in the middle reaches of Weihe River. The authors carried out chronological and sedimentological study on the samples collected from the stagnant zones. Analyses of grain-size distribution and magnetic susceptibility for the samples collected from the Holocene strata suggest that the sediments hosted in the profiles are the paleoflood stagnant material and have recorded climatic and hydrological information of palaeofloods during that period. The results reveal that palaeoflood occurred very frequently at the turning period from the middle Holocene to the late Holocene, during which the climate in the Weihe reaches turned to be dry.