Abstract: Based on the fact that the west coast of Bohai Bay is a typical muddy coast,paleoclimate and paleoenvironment are both studied.This paper makes an analysis of the pollen fossil according to the relevant archaeological data and related research results of Bohai Bay region and makes a preliminary reconstruction of paleoclimate of the region since Holocene,then the climate changes are obtained.This paper makes an analysis of the pollen fossil of Bohai Bay region and makes a preliminary recovery of four typical...