The present invention relates to a composition for preventing or treating airway disease, comprising an effective amount of daidzein and optionally a pharmaceutically acceptable carrier, wherein genistein is excluded.本發明係關於一種用於預防或治療呼吸道疾病之組合物,其包含有效劑量之大豆素(daidzein)及視情況醫藥學上可接受之載劑,但不包含染料木素(genistein)。