Abstract: Yellow Sea is a shelf sea situated between China and Korea Peninsula. The distribution of spore-pollen and algae of the surface sediments of Yellow Sea may be divided into 4 characteristic regions:1. Artemisia-Chenopodiaccae-Gramineae region. 2. Pinus-Quercus-herbaceous pollen-Hystrichosphaera region. 3. Pinus-Balti-sphaeridinm-Quercus-Pteridium-Pteris region. 4. Pinus-Quercus-Pteris-Baltisphaeridium region. Through the study of spore-pollen and algae, the problems under discussion are: 1. the relationship between the spore-pollen assemblages of surface sediments and vegetation of continental margin, 2. resedimentation of fossils of spore-pollen and sedimental provenance of the sea basin, 3. the relationship between the distribution of Hystrichosphaera and Baltisphaeridium and water depth, 4. the relationship between the distribution of diatom and depth and characteristics of water bodies and 5. the relationship between mangrove pollen and sea currents.