The invention provides a preparation method of natural spice superfine powder and an application of natural spice superfine powder in tobacco sheets. The preparation method comprises the following steps: (1) preparing spice fine powder; (2) conducting low-temperature superfine grinding; and (3) adding spice superfine powder to a paper pulp making front tank, uniformly stirring the spice superfine powder, conducting paper making and drying processes on paper pulp, so that a fiber sheet base is formed, then directly dip-coating or spraying a concentrated solution on the sheet base, and conducting drying and slicing, so that the tobacco sheets are obtained. Special spice, which is prepared by virtue of a superfine grinding technology, has the characteristics of being intense and pure in aroma, tiny and uniform in particle, relatively good in dispersity and good in absorption ability, and meanwhile, the pure natural attribute of the finished product (the superfine powder) is guaranteed; the spice prepared by the invention, after applied to the tobacco sheets, can enrich aroma quantity and the spice can coordinate with cigarette flavor, so that smoke is soft and delicate, oral residue is relieved, irritation is reduced and offensive odor is masked, and the aroma can stably last for a long time; and the natural spice superfine powder, as a spice additive, is applicable to flavoring treatment of the sheets.