The invention discloses a cigarette paper additive with the efficacies of wetting the throat, clearing away the lung-heat and reducing phlegm and application thereof. Litchi flower honey, phenethyl alcohol, phenylethyl propionate, phenylethyl formate, L-menthol, megastigmatrienone, mogroside, hydroxyethyl glycine flavone, propanediol, glyceryl triacetate, Tween-80, mint essential oil, perilla essential oil, herba lophatheri essential oil, chrysanthemum extracts and water are uniformly mixed to obtain the product of the cigarette paper additive, wherein the hydroxyethyl glycine flavone is a novel flavonoid compound separated from emblic leafflower fruits; the novel flavonoid compound has the structural formula shown as the description, and is named as 8-hydroxy-7-(3-ethoxy)-2'-methoxyflavone. In the cigarette paper preparation process, 1 to 2 percent of additives are coated; the specific faint scent and the sweet and moist feeling of Yunnan cigarettes are obviously enhanced; when passing through the throat, the smoke gas is more smooth; the efficacies of wetting throat, clearing away the lung-heat and reducing phlegm are achieved; the cigarette suction comfort is improved; the cigarette style cannot be obviously changed.