Abstract:The Marine Oxygen Isotope (MIS3-1) stage refers to a period from the last glacial period to the post glacial period recorded by foraminiferal oxygen isotopes in deep-sea sediments. During this period, the climate is characterized by inter-glacial stage, extreme cold, several thousand-year scale climate events to the final warming, and related scientific issues such as the sedimentary response and influencing factors of climate change have always been attracted attention. However, the record and discussion of the Millennium-scale climate events in this period are still controversial in North China Plain. In order to discuss the climatic characteristics of the northwest area of the North China Plain at this stage, high-density 14C dating samples were tested in the natural profile of Dachang sag, and the major and trace element geochemical content analysis was carried out to obtain the trend characteristics of geochemical data. The results show that the age of the profile range from 32.5 ka to 8.2 ka, which corresponds from the late MIS3 stage to the early MIS1 stage. During this period, the major element oxides TFe2O3, Al2O3, SiO2, MgO, CaO, Na2O and K2O show the same change trend with the trace elements Sr, V, Ni, Co, Ga, Cu, Ba, Cr and Zn; During the last glacial maximum of MIS2 and the B?lling-Aller?d warm period and the Younger Dryas cold period in the early MIS1 stage, indicators such as K/Na, Al/Na, Chemical Index of Alteration (CIA), Chemical index of weathering (CIW), and paleotemperature are related to the East Asian monsoon climate. Therefore, it is believed that the climate change in the North China Plain in the late Pleistocene can be attributed to the evolution of the East Asian monsoon region under the global climate system.