In order to find a sustainable improvement method for acid tobacco-planting soil, afield experiment was conducted to study the effects of lime, lime combined with green manure on the physical properties, nutrients and acidity indexes of acid tobacco-planting soil in flue-cured tobacco continuous cropping and flue-cured tobacco and corn rotation systems. The correlation between soil pH and soil physical and chemical indicators was analyzed. The results were as follows:Under the flue-cured tobacco continuous cropping pattern, combined application of lime with green manure reduced soil bulk density, hydrolyzed acid, exchangeable acid, exchangeable hydrogen and aluminum by 11.97%, 25.00%, 18.46%, 21.74% and 16.67% respectively, and increased soil porosity, organic matter, alkali-hydrolyzable N, available P, available K, pH, cation exchange capacity, base saturation, soil buffer capacity by 42.26%, 57.02%, 11.86%, 16.39%, 50.65%, 5.97%, 8.05%, 13.17% and 81.90% respectively compared to lime application alone. Under combined application, flue-cured tobacco and corn rotation reduced soil bulk density, hydrolyzable acid, exchangeable acid, exchangeable hydrogen and exchangeable aluminum by 4.00%, 20.51%, 27.92%, 10.00% and 37.14% respectively, increased soil porosity, organic matter, alkali-hydrolyzable N, available P, available K, pH, cation exchange capacity, base saturation, and soil buffer capacity by 9.17%, 13.97%, 7.22%, 12.06%, 5.08%, 5.15%, 35.27%, 15.44%, and 28.05%, respectively compared to flue-cured tobacco continuous cropping. The effects of combined application on the improvement of acid soil were better than those of single application of lime. The flue-cured tobacco and corn rotation system was more conducive to the improvement of acidified soil. The results of this experiment provided theoretical basis and practical guidance for the use of lime and planting green manure to improve the acid soil.