The sediment cores were collected using drilling rig in 2008 at sites TS located in the eastern Nanri Islands.According to the characteristics of total organic carbon(TOC),organic carbon isotope values(delta13CTOC),in-organic carbon content,C/N and ~(14) C age in the sediment core,the depositional environment and paleoclimate changes of this area since the last glacial were analyzed.TOC in sediment varied from 0.44%to 0.74%.TOC con-tent was relatively high during the last glacial and interim Holocene,and varied little in Early Holocene and the range variation increased in late Holocene.The C/N values varied from 5.3 to 14.9,with average value 8.1,delta~(13) C_(TOC) values varied from -23.07to -21.04,suggesting that the contents of organic matter in the sediment are mainly controlled by marine origin.The inorganic carbon content varied from 3.3%to 10.9%.The results show that the delta~(13) C_(TOC),TOC and C/N in core have a good relation with climate changes. Based on~(14)C age and above comprehensive analysis, it can be concluded that the paleoclimate of the study area has four stages as follows since 11 250 aBP. (1) 11 500~9 000 aBP:during this stage the climate was cold and dry, the sea level descended, and the sampling site could be intertide;(2) 9 000~8 000 aBP:this stage the climate had been changing from cold to warm;(3) 8 000~4 300 aBP:the climate was stable and warm and wet in this period, the climate appeared slight fluctuation in the late of period;(4) since 4 300 aBP:an instable stage since 4 300 aBP is suggested by the dramatic variation of all proxies; ① a short cold stage occurred at 4 300~3 000 aBP; ② the stage between 3 000~1 800 aBP, the climate is stable and warm; ③ the climate became cold the period of 1 800~1 000 aBP; ④ the temperature have increased since the 1 000 aBP.