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Through the scientific investigation on Lushan for a long time,detailed studies have been carried out on the geologic stratum section of Late Quaternary in Dajiaochang. The series age data of complete stratigraphic section and full time formation since 400 kaBP were based on the results of the analyses using the dating methods with various instruments such as the ancient geomagnetism,electronics spin resonance (ESR),36Cl and lumines-cence dating,etc. Corresponding to these data,it identified the paleomagnetic polarity events including Biwa-Ⅲevent (320 kaBP),Biwa-Ⅱevent (260 kaBP),Biwa-Ⅰevent (180 kaBP,scarcity due to the disturbance of the iron dish),Blake event (100 kaBP) and Laschamp event (20 kaBP,didn’t grow due to the activities of the surface), etc. Combined with the sequence stratigraphy,layer type characteristics and its sediment environment,the strati-graphic can be divided into 4 stages of development respectively:StageⅠis the climate period of glacial epoch (200~400 kaBP);stageⅡis the climate period of interglacial epoch (100~200 kaBP);stageⅢis the climate peri-od of periglacial epoch (10~100 kaBP);stageⅣis the climate period of postglacial epoch (0~10 kaBP).