The invention provides a preparation method of tobacco-aroma matters for tobacco sheets.The preparation method includes using an extraction-molecular distillation combined technology for separating purified tobacco raw materials to obtain the strongly-satisfying tobacco-aroma matters.By the extraction-molecular distillation combined technology, nicotine and characteristic tobacco aroma light constituents in tobacco extract are enriched and purified, and macromolecular substances such as cellulose, polysaccharide, pectin and protein adverse to smell absorption can be further removed.The tobacco sheets prepared from the tobacco-aroma matters are capable of remarkably increasing smoke concentration, strength and aroma of cigarette products and make smokers feel satisfied and comfortable strongly.