Additive for reducing cigarette tar and reducing poison and its preparing method

A cigaertte tar and toxic matter reducing additive is prepared by using tea polyphenol, potassium citrate, sodium potassium tartrate and tannic acid in a certain proportion as raw materials and through disolving in aqueous solution of alcohol, heating to produce saturated solution and filtering. The features of the present invention is that the additive can not only reduce the cigarette tar content but also reduce the harmful and toxic matter content in cigartte without degrading cigarette quality. Therefore, the present invention makes it possible to reduce the harm of smoking to human body while meeting the requirement of the smoker.