In previous studies, the YSWC and the YSCWM are observed in the central area in different seasons, thus if the seasonal patterns of phytoplankton biomass and community structure in the central area are different from those in the coastal area. What are the roles of the YSWC and the YSCWN on the distributions of phytoplankton biomass and community structure in the yellow sea? Our goal was to better understand the seasonal phytoplankton responses processes in the central yellow sea