Preparation method of tobacco sauce additive capable of improving smoking quality of cut tobacco stems as well as application of tobacco sauce additive

The invention discloses a preparation method of a tobacco sauce additive capable of improving the smoking quality of cut tobacco stems. The preparation method is characterized in that one or more of the cut tobacco stems, low-grade cut tobaccos or other natural products are taken as raw materials, the raw materials are sequentially extracted by low-polarity, medium-polarity and high-polarity solvents, and extract is dissolved in ethyl alcohol, propylene glycol or a mixture of ethyl alcohol and propylene glycol to prepare the tobacco sauce additive. The tobacco sauce additive is sprayed in the cut tobacco stems, the special wood gas of the cut tobacco stems can be reduced remarkably, the irritation is reduced, and smoking aftertaste quality of the cut tobacco stems and comfort are improved.