Objective   To explore the influence of medicaleducation on smoking-related knowledge, attitude, and practice among undergraduate students.

  Methods   8 760 undergraduate students with grade 1 to 3 were sampled with cluster sampling method, and they were surveyed with aself-administered questionnaire to inquire their demographic characteristics and smoking-related knowledge, attitude, and practice.

  Results   The mean score of smoking-related knowledge for female medical students was observed in grade 2 and 3 male undergraduate students.Except the mean score of smoking-related attitude for the grade 2 medical students was higher than the score for grade 2 non-medical students, the mean score of soking-related attitude was significant difference amongthe remained medical and non-medical undergraduate students.Among smokingtriers before enteringthe university, there were more un-regular smokers reported in non-medical students than medical students after they entered the university.But, there was no difference for them becomingregular smoker between medical students and non-medical students.Amongthose being free smoking before enteringthe university, medical students less tried to smokingthan non-medical students did, and no significance for un-regularand regular smokers was obtained between medical and nonmedical students.

  Conclusion   Medicaleducation might improve the smoking-related knowledge and reduced the prevalence rate of smokingtriers amongthose being free smoking before enteringthe university, and reduced the prevalence rate of unregular smokers amongthose being smokingtriers before enteringthe university.