The purpose of this study has been to evaluate the prevalence of smoking habit, knowledge on the adverse health effects and attitudes towards it among nurses students in their three years of study (University School of Girona). A self-administrated questionnaire was used. A total of 135 questionnaires were answered (88%) from an estimated available population of 154 students (94% females with 21 years old of mean age). The prevalence of current smoking was 34.3%; ex smokers 23.3% and non smokers 42.5%. The mean of tobacco consumption was 367.6 cigarettes/month. 92% no smokers, 91% ex smokers and 76% smokers thought that smoking has adverse health effects (p less than 0.001). They consider the health protection like the first reason to give up smoking. 38% will advise their healthy smokers patients about the risk of their habit. We conclude: 1.-Low prevalence of smoking habit; 2.-Nurses should know methods aimed at lowering smoking rates, assuming that they have determined influence on the population behavior.