7 palynology assemblages and 8 stages about the climatic evolution were distinguished according to the research of spore-pollen from whole core hole DZS1 (202.1 m long) in the northern sea area of East China Sea. Climate stages of Quaternary in this sea area were reconstructed as follows: cold-dry, temperate-cool and moist, warm and slightly dry, warm and moist, temperate-cool and more dry, temperate and little dry, cold and dry, getting warm, warm and moist. These climate fluctuations coincided with the regional climate change. Combined with data of samples AMS ~(14)C, OSL and palaeomagnetic dating, Pliocene evolution features of climate and environment in the northern sea area of East China Sea were discussed. All these provide palynology data and lay the basis on Quaternary stratigraphic classification and correlation in the northern sea area of East China Sea.