Abstract: Taking hollyhock and rape as experimental materials,the effect of spraying gibberellic（GA₃）on the accumulation of heavy metals in rape under lead and cadmium stress was studied by using the method of 1:1 intercropping between hollyhock and rape and spraying GA₃ with different concentrations(0,10^-7,10^-6,10^-4 mol·L^-1)under lead and cadmium stress,in order to provide reference for the treatment of cadmium and lead pollution in soil,and the improvement of crop quality.The results showed that after spraying GA₃ on hollyhock,with the increase of GA₃ treatment concentration,the tolerance index of hollyhock and rape to Pb and Cd increased,and the accumulation of rape to Pb and Cd decreased;superoxide dismutase（SOD）,peroxidase（POD）,catalase（CAT）of hollyhock and rape increased with the increase of GA₃ treatment concentration.In the soil polluted by Pb and Cd,the method of spraying GA₃ with hollyhock and intercropping with rape can be used to reduce the accumulation of heavy metals in rape,improve the aboveground biomass of rape,and ensure the quality and safety of rapeseed.