【英文摘要】Xingkai Lake, a transboundary lake by China and Russia, is the largest freshwater lake in northeast Asia. It is the first time for this research to study the invironmental proxies from sediment core of the Xingkai Lake. Based on analysis for pollen, grain size, diffuse reflectance spectroscopy, magnetic susceptibility, organic carbon and nitrogen isotope, this research explored the paleoclimatic evolution in the catchment since 28KaBP. The results indicate that paleoclimatic evolution in research area can be divided into seven stages: two cold and dry stages (27.7~25.5cal.ka B.P. and 23.7~19. 9cal. ka B.P.), two cold and wet stages(25.5~23.7cal.ka B.P. and 19. 9~14. 5cal. ka B.P. )，a fluctuating stages from warm-wet to cold-dry (14.5~10. 8cal. ka B.P.)，a warm-wet stage(10. 8~1.0cal. ka B.P.) and a cool and dry stage(1. 0 ka B. P. to present) . Seven spore-pollen assemblages have been distinguished. The vegetation evolution are as follows: dark coniferous tree grassland, dark coniferous and deciduous broadleaved mixed tree grassland, sparse dark coniferous and deciduous broadleaved mixed tree grassland, deciduous broadleaved tree grassland, deciduous broadleaved forest to sparse deciduous broadleaved tree grassland, deciduous broadleaved forest, dark coniferous forest.