吸烟有害健康已成为科学的定论。青少年阶段是身体和思想转变形成的重要时期，显然在这一时期养成吸烟的不文明卫生行为习惯对他们身心健康的发育是不利的，尤其是一旦养成习惯戒之较难，且对他们今后的身心健康产生极大危害。因此，禁止学生吸烟，提高学生的文明卫生素质教育 Smoking has become a scientific conclusion. The adolescent stage is an important period for the transformation of the body and mind. Obviously, the uncivilized hygiene behaviors that develop smoking in this period are unfavorable to the development of their physical and mental health, especially if it is difficult to cultivate habits and to them. The physical and mental health in the future will cause great harm. Therefore, students are forbidden to smoke and improve their education on the quality of civilization.