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[Objective] This paper aimed to study the effects of the application of the different weight that unfermented maize straw and fermented maize straw mangle returned to tobacco-planting soil on the change of soil humus composition, pH, soil available nutrients and the tobacco production value, which provided the scientific basis for the method of straw residue returned. [Method] This experiment was set up five treatment, CK :Control ( only use specific tobacco fertilizers), T1 :Specific tobacco fertilizers + 40 kg/667m² unfermented maize straw T2 Specific tobacco fertilizers + 80 kg/667m² unfermented maize straw,T3 :Specific tobacco fertilizers + 40 kg/667m² fermented maize straw, T4: Specific tobacco fertilizers + 80 kg/667m² fermented maize straw. It was the time to collect the soil samples, at the first day, the 30th day, the 60th day and the 90th day, after tobacco seedlings were transplanted, and the output value and yield were statistics of various treatments. [Result] During the period from first day to the 90th day, the available nutrients of experimental group was a increasing trend compared with the CK treatment. The HA/FA value of T3 and T4 treated showed a trend of that decreasing first and then increasing. [Conclusion] The HA (Humic Acid) /FA (Fulvic Acid) value of the soil could be effectively reduced by fermented maize straw mangle, and the average price and output value of roasted tobacco were significantly increased. [ABSTRACT FROM AUTHOR]