The invention discloses a method for improving the usability of a short tobacco stem. The method comprises the following steps: carrying out primary roller stem moistening, stem storage, primary stem pressing, stem roasting and storage; then sending the short tobacco stem to stem-making silk yarn for carrying out washing with water, secondary roller stem moistening, secondary stem evaporation, secondary stem pressing, stem shred cutting, stem shred material adding and stem shred expansion and drying. After the short tobacco stem is pretreated by a pre-pressing and thin-pressing thin-cutting technology, the stem shred usability is improved obviously; the shred shape of a stem shred is good, and is closer to the shape of a leaf shred; and the content of the stem block of a tobacco stem label is low, which is good for the uniform doping and combustion effect of the stem shred; the tobacco stem shred has the advantages of light woodiness few impurities, tiny irritation, tiny fragrance loss and the like, and the sensory quality of the cigarettes is improved; and the method is simple, direct and feasible, and can be realized in the existing tobacco-stem-made silk yarn and re-roasting plant.