Objective　To investigate smoking status， knowledge of smoking hazards， attitude of tobacco control and skill of assisting smoking cessation of the staff in a teaching hospital in Chongqing and to provide references for the further construction of ‘smoking-free hospital’. Methods　General investi-gation was taken on the staff in a teaching hospital in Chongqing with a self-designed questionnaire. Main contents of questionnaire include： social demographic information， smoking status， awareness of tobacco hazard， willingness and methods of tobacco control，etc. All the data were inputted with software Epidata 3.1 and were analyzed with SPSS 13.0. Results　The total smoking rate was 9.65%， with 30.49% for male， 2.75% for female and 12.50% for clinician. The age distribution of smoking staff was described as follow-ing： 91.97% being under 50 year-old and more than 50.00% being 20-35 year-old. 52.43% of the surveyed did not know Framework Convention of Tobacco Control of WHO. Relatively， most of the surveyed only knew well the relationship between respiratory diseases and tobacco use and the relation-ship between fetal abnormalities and tobacco use. 84.99% of the surveyed agreed with outdoor-smoking policy；83.56% of the surveyed claimed that they had discouraged smoking behaviors in public at various extents， 14.20% of the surveyed agreed that assisting the public in smoking cessation was one of the aims of constructing ‘smoking-free hospital’； 70.00% clinicians claimed routinely inquiring and noting smok-ing status of patients， which was better than nurses and medical technicians；almost 30.00% clinic staff did not know quitting smoking drugs at all， approximately 70.00% clinic staff claimed a lack of confidence in smoking control and approximately 70.00% clinicians and nurses did not recommend pro-fessional methods of smoking cessation in practice. Conclusions　Smoking staff in the teaching hospital are almost younger people， which is an alarm of the urgent need for tobacco control education. Most staff reach a consensus on keeping smoking-free environment in hospital， but they do not sufficiently acknowledge their social responsibility for tobacco control， and also there is a distance before they can serve as a smok-ing cessation assistant. Tobacco control must be incorporated in long-term mechanism of hospital con-struction. There are three steps in the construction of smoking-free hospital：①creating a smoking-free en-vironment in hospital； ②encouraging patients to quit smoking and providing professional service of smoking cessation；③making a positive effort on social tobacco control and advocating smoking cessation in public.