Abstract:The data of upper level circulation,sea surface temperature and surface meteorological elements are used in this paper to construct 5 forecasting models of long,medium and short ranges for the incidence date and insect quantity of planthopper in Shanghai.There are field beginning date forecasting model,lamp-trap beginning date forecasting model,peak quantity date forecasting model,peak inset quantity forecasting model,and natural observation garden inset density forecasting model.By comprehensively using those model,the incidence date and damage levels of planthopper in Shanghai can be predicted,thus providing a real time basis for prevention and elimination of planthopper.