Abstract: This paper documents the morphology, taxonomy and diversity of living coccolithophores in Chinese sea waters (CSW). Totally, 97 species have been recorded, belonging to 4 orders, 11 families, and 44 genera. Syracosphaera, including 20 species, is the most abundant living coccolithophores genus in CSW. We also list five new record species in this paper. They are Cyrtosphaera lecaliae, Syracosphaera histrica, Corisphaera strigilis, Pontosphaera discopora and Braarudosphaera bigelowii. Meanwhile, we also describe 19 species (include six species indeterminate) of living coccolithophores founded in CSW, based on scanning electron microscopy (SEM) or polarizing microscope observations. The identification key for common living coccolithophores species in CSW is also presented.