Abstract: Objective To understand the smoking and passive smoking status and awareness of tobacco hazards among adults aged ≥ 15 years in Qingdao. Methods A total of 4 349 residents aged ≥ 15 years were selected through stratified multi-stage cluster sampling and a questionnaire survey was conducted among them. Indicators such as current smoking rates, passive smoking rates and awareness of tobacco hazards were analyzed by the method of complex sampling design. Results The current smoking rate of residents aged ≥ 15 years was 21.31%, the prevalence of daily cigarette smoking was 18.18%, and men was higher than women, rural area was higher than urban area. Rates of secondhand smoke exposure in public place, workplace and at home were 42.39%, 26.62% and 40.53% respectively. The exposure rates were significantly different in gender, education level, etc. Only 21.72% residents awared that smoking could cause stroke, myocardial infarction, lung cancer and penile erectile dysfunction. 45.19% residents awared that passive smoking could cause heart disease, lung cancer in adults and lung disease in children. Conclusions The prevalence of smoking and passive smoking in adults aged ≥ 15 years in Qingdao were below the national level in 2010 and 2015, but the epidemic status was still serious and the cognition of tobacco risk related knowledge was still scarce. The tobacco control is facing a great challenge.