According to pollen assemblage analysis of 3 boreholes in Xiamen Bay-Jiulong River Estuary region

combined with the results of sedimentary facies and dating analysis

this paper explore the paleoclimatic and paleoenvironmental evolution in this area since Late Pleistocene. Pollen analysis show that: since the early stage of MIS4

the main paleoclimatic evolution of the region includes the fluctuations and changes such as: slightly dry-cold in Late Pleistocene

drywarm then wet-warm in early Mid Holocene（8~5.5 cal. ka BP），wet-warm then slightly moderatedry climate in late Mid Holocene（5.5~2.5 cal. ka BP） and wet-warm in Late Holocene（since 2.5 cal. ka BP）. Global scale substantial cooling event in Late Pleistocene impacts clearly in this area. Characteristic of the climate change in Holocene is that the temperature and humidity varies fluctualy between some ranges. The human activity infects clearly the vegetation form since Late Holocene.