The environmental records from Xiashu loess are of great importance to understand the evolution of the East Asian monsoon.It's the important carrier of the global climate change research.The material is selected from a typical profile of Xiashu loess at Xianlin,Nanjing.We analyzed the chemical elements, weathering parameters and magnetic susceptibility.The climate proxies reflect the chemical weathering degree and the sedimentary environment.The chemical elements results show that the major element contents of Nanjing Xiashu loess are comparable to the average composition of the upper continental crust.It indicates the material sources of XL Xiashu loess were stable and it was derived from well-mixed sedimentary protoliths which had undergone numerous upper crustal recycling processes.The results of CIA show that the pedogenic environment of XL area is wetter than Luochuan loess and similar to Luochuan paleosoil and Zhenjiang Xiashu loess,and was underwent moderate chemical weathering.The contrast of weathering parameters and magnetic susceptibility indicates that during about 250-100ka,the pedogenic environment of Xianlin profile is divided into four intervals:cold and dry,warm and wet,cold and wet,warm and wet.Our research reflects that the chemical weathering intensity is increasing during this period.The paleoclimate of the middle and lower valley of the Yangtze River area has gradually become warm-wet during about 250-100ka.The results declare for the increasing of the East Asian summer monsoon.