The stimulate experiments show the water flow plays an important role in the succession of plankton community.The species number and biomass of algae under weak water flow (0.124m ·s^-1)were highest in the experiments.This was coincided with the low ratio of NO₃/TDN.The algae abundance was increased from the stationary state to the strong water flow (0.319m·s^-1) state, the corresponding TDN/TN, TDP/TP were decreased at the same time.The photosynthetic rates from the stationary state to the strong water flow state were also decreased.The change of zooplanktonic species composition and abundance were larger than thatof phytoplankton.The change of cladoceran composition and abundance were ext remely strong.The change of species composition and abundance of phy to-zooplankton were influenced by water flow through the change of substance solids, transparency, light condition under water and the release of nutrients caused by physico-chemico-biololgical processing.