The invention discloses a preparation method and application of functional reconstituted tobacco. The preparation method includes the following steps that 1, tobacco waste is subjected to soaking extraction and
solid-liquid separation to obtain a tobacco
powder extraction solution and tobacco
powder dregs; 2, tobacco stems are subjected to soaking extraction and separation to obtain a stem extraction solution and stem dregs; 3, the tobacco
powder dregs and stem dreg fibers are mixed, wood pulp fibers are added, and the mixture is prepared into pulp; 4, non-tobacco matter is smashed and screened, the screened non-tobacco matter is added into the pulp, the non-tobacco matter and the pulp are mixed evenly, and the pulp is prepared into a substrate in a
papermaking mode; or the screened non-tobacco matter is added into the pulp in the pulp
papermaking process; 5, a stem concentrated solution, a tobacco powder concentrated solution and spice are blended to obtain a
coating solution; 6, the substrate is coated with the
coating solution, dried and sliced to obtain tobacco slices. According to the preparation method, the non-tobacco matter is smashed and then added into the pulp, then
papermaking is carried out, high-
temperature treatment of the non-tobacco matter is not needed, the preparation method is suitable for many types of raw materials, the characteristic
aroma of the non-tobacco matter is kept to the maximum degree, and the quality of the tobacco slices is improved.