Abstract: Aiming at the problems of higher percentage of short and fine fibers and unsatisfactory physical properties generated during pulping of reconstituted tobacco, a new type disc for low concentration disc refiner was developed, and its influences on the characters of pulp and reconstituted tobacco were analyzed, the results showed that the stability of pulping promoted by 42%, the average fiber length increased by 12%, the amount of long fibers (< 20 mesh, > 830 μm) increased by 54.44%, that of short and fine fractions (> 100 mesh, < 150 μm) decreased by 26.21%, pulp quality improved obviously and the base sheet was loose in structure. The bulk thickness of reconstituted tobacco increased from 2.05 to 2.20 cm³/g, and the tensile strength and tear strength raised from 0.26 to 0.33 kN/m and from 140.52 to 161.73 mN, respectively. The surface character of reconstituted tobacco was promoted, at the same time the energy consumption of refining reduced by 20%.