The effects of biochar combined with green manure on tobacco planting soil and tobacco plant growth were studied by measuring the physical and chemical properties of tobacco rhizosphere soil and the growth indexes of tobacco plants.The results showed that compared with conventional fertilization，the application of biochar or green manure significantly reduced soil bulk density，increased soil porosity and water content，and improved soil pH and available nutrient content.Among them，the effect of biochar combined with green manure was the most significant，and the soil bulk density decreased by 31.87% in the rosette stage.The soil pH increased by 33.48% and 37.83% at vigorous growth stage and mature stage，respectively，and the pH ranged from 5.1 to 6.2.In terms of available nutrient content，the alkali hydrolyzed nitrogen，available phosphorus and available potassium of biochar combined with green manure in the rosette stage increased by 26.19%，48.10% and 32.78%，respectively，compared with single application of biochar，and increased by 6.66%，69.52% and 46.74%，respectively，compared with green manure.In addition，compared with conventional fertilization，biochar combined with green manure promoted the growth of tobacco plants in the field.The plant height，stem circumference and maximum leaf length increased by 24.58%，18.62% and 11.69%，respectively，the dry weight of roots and leaves increased by 16.34% and 11.00%，respectively.Compared with 2020，the soil bulk density of each treatment showed a downward trend，while the soil porosity，water content，pH and available nutrient content showed an upward trend.In summary，biochar combined with green manure could promote the growth of tobacco plants by improving soil physical and chemical properties，and had a good promotion prospect in the field production and application of flue-cured tobacco.