The invention discloses an application and method for radix bupleuri volatile oil in the cigarette quality improvement. The radix bupleuri volatile oil is extracted from radix bupleuri and added into cut tobacco of cigarettes and the cigarettes are then formed through rolling. According to the application and method, the radix bupleuri volatile oil is extracted through the steam distillation technology and applied to cigarette products for the first time, so that the smoking quality of the cigarettes is improved.