Abstract: The methods of controlling the rosette disease of red Fuji apple trees were studied through various dilutions of ZnSO₄·7H₂O spraying toleavesin autumn and various dilutions of ZnSO₄·7H₂O，NAA and ZnSO₄·7H₂O+NAA spraying to branchlets before sprouting ．The results show that it is better to control small-leaf-rosette disease of apple tree by spraying ZnSO₄。7H₂O in autumn，spraying ZnSO₄。7H₂O and the mixed solution of ZnSO₄·7H₂O and NAA before sprouting．The controlling effects are very significant by spraying 100g／kg ZnSO₄·7H₂O in autumn，spraying 100g／kgZnSO₄·7H₂O，150g／kgZnSO₄。7H₂O and l00／kgZnSO₄·7H₂O+2．0mg／kg NAA，loog／kg ZnSO₄·7H₂O+4．0mg／kg NAA before sprouting ．The shoots length，leaf area，chlorophyll and Zn contents in leaves are significantly increased，and the rosette disease shoots percentage are significantly declined ．