Compostion comprising Guibi-tang extract for treatment of lung cancer

The present invention relates to a composition for treating lung cancer comprising an anticancer drug and a guibi-tang (mixed natural herbs) extract. According to the present invention, the composition significantly increases a treatment effect of the anticancer drug by administering the anticancer drug to an individual and administering the guibi-tang extract into the individual, and prevents and decreases side effects caused by various anticancer therapies.