Abstract: The effect of shading in tea garden on population dynamics of small green leafhopper (SGL) was investigated for their eggs, nymphae and adults with plant-flapping and microscopic examination.The results showed that the effect of shading in tea garden was not significant in the population of SGL adults (F=0.836, P> 0.05) but significant on their nymph (F=8.04, P<0.01) and egg density (F=7.183, P<0.05) .The shading in tea garden might delay the impairing of small green leafhopper migration without changing on their occurrence regulation.The population dynamics of small green leafhopper had two peaks annually.The population of SGL adults was significantly positive correlation to its populations in the nymphae and eggs.