目的　了解西安市居民的吸烟现状 .方法　随机抽取 10 0 0名 15～ 6 9岁居民进行入户调查 .结果　西安市居民吸烟率为 32 .2 % (男 6 4.2 % ,女 1.8% ) ,平均开始吸烟年龄为2 2 .5岁 ,日平均吸烟量为 12 .8支 ,且开始吸烟年龄越早 ,吸烟量越大 ,尝试、社交需要和解乏是主要的吸烟原因 ,吸烟者的戒烟率为 9.0 3% .分析发现 ,性别、职业、文化程度及家庭成员吸烟均与居民的吸烟行为有关 .结论　吸烟在西安市仍然是一个严重的公共卫生问题 ,控烟应从全社会抓起 ,以青少年作为宣传教育的重点 ,加强控烟力度 Objective To understand the smoking status of residents in Xi’an.Methods A total of 10 0 residents from 15 to 69 years old were selected for household survey.Results The smoking prevalence in Xi’an was 32.2% (male 6 4.2%, female 1.8%), mean The starting age of smoking was 22.5 years. The average daily smoking was 12.8 cigarettes. The earlier the smoking was started, the higher the smoking was, the more smoking was attempted and the social needs were relieved. Smoking cessation rate was 9.0 3%. Analysis found that gender, occupation, educational level and smoking of family members were related to smoking behavior of residents.Conclusion Smoking is still a serious public health problem in Xi’an, tobacco control should be started from all walks of life and adolescents should be used as propaganda The focus of education to strengthen tobacco control efforts