Method for effectively improving quality of reconstituted tobaccos

The invention discloses a method for effectively improving the quality of reconstituted tobaccos. A tobacco raw material extracting solution is firstly filtered through a tubular microfiltration membrane, wherein the filtration pore diameter of the tubular microfiltration membrane is 100-500 nm; filtrate is filtered through a nanofiltration membrane, wherein the pore diameter of the nanofiltrationmembrane is 1-2 nm; and filtrate is obtained. According to the method, the tobacco raw material extracting solution used in the coating process is filtered through the tubular microfiltration membrane, so that suspended matter impurities in the extracting solution can be effectively removed, the sensory smoking quality of the finished reconstituted tobaccos is improved, the smoke clearness of reconstituted products is improved, and impurity gas of the reconstituted tobacco products is reduced; chloride ions and nitrate ions in tobacco raw materials can be effectively rejected by the nanofiltration membrane, so that t