The invention discloses a method for preparing reconstituted tobacco leaves, which belongs to the technical field of tobacco leaf preparation. In the present invention, the ramie fiber and bagasse are firstly dried and crushed, soaked in acetic acid solution, filtered and collected, mixed with sodium hydroxide solution and heated, and then filtered to mix the filter cake with water, added hydrogen peroxide to disperse, and centrifuged to collect the precipitate After air-drying, the dry product is obtained, and then arabinose, sorbitol, etc. are used as raw materials to prepare a coating mixture, and then the tobacco stem and tobacco powder are made into powder and then extracted, and then mixed with the dried product after steam explosion treatment, Mixing with water and drying, and then beating and paper-making to make tobacco sheet base, and finally coating the coating mixture on the surface of tobacco sheet base, and placing it in a constant temperature and humidity box before taking it out to obtain reconstituted tobacco leaves. The invention has a high utilization rate of tobacco raw materials, and the reconstituted tobacco leaves produced have the characteristics of low tar content and good combustion performance. At the same time, the thickness of the tobacco leaves is uniform and the handle is good, which meets the needs of cigarette industry production.