目的　了解广州市中学生的吸烟情况和对吸烟行为的认知和态度。方法　用集中调查对象独立填写调查表的方法 ,对广州市越秀区中学生 1 2 60人进行了抽样调查。结果　 1 9 3%的中学生至少吸过一口烟 ,且吸烟率随着年龄的增长而上升。通常得到香烟的途径是朋友给和自己用零用钱买。 5 5%的人认为吸烟有好处 ,主要是能解除疲劳和调解情绪 ;94 5%的人承认吸烟有害 ,主要是污染环境和浪费金钱。他们吸烟的行为除受年龄的影响外 ,还受家庭、朋友以及自己对吸烟行为的认知和态度的影响。结论　采取综合性措施 ,使学生充分认识到吸烟的长期和短期危害 ,可有效地控制中学生的吸烟行为 Objective To understand the smoking status of middle school students in Guangzhou and its cognition and attitude toward smoking behaviors. Methods A questionnaire survey was conducted by using a questionnaire survey conducted independently by a centralized survey. A sample of 1206 middle school students in Yuexiu District of Guangzhou City was surveyed. Results 193% of middle school students smoked at least one cigarette, and the smoking rate increased with age. The usual way to get cigarettes is to give friends and give yourself pocket money. 5 5% of people think smoking is good, mainly to relieve fatigue and mediate emotions; 95% of people admit that smoking is harmful, mainly polluting the environment and wasting money. Their smoking behaviors are influenced by their age, family and friends as well as their cognition and attitudes toward smoking behavior. Conclusion Comprehensive measures are taken to make students fully aware of the long-term and short-term hazards of smoking and can effectively control the smoking behavior of middle school students