Abstract: ObjectiveTo analyze relevant factors of tubercu losis(TB)inc idence among people in colse contact with active tubercu losis case inrural areas.MethodsTotally 2 054 subjects in close contact with 719 active TB patients in rural areas were chosen at random from September 2005 to September 2007.The hospitalized cases and outpatient data of active TB patients were collected.Questionnaire survey was conducted in the subjects to understand the spread characteristics of TB and the definition of the subjects in contact and close contact with active TB patient.With multivariate analysis,the main factors of tuberculosis incidence among people in close contact with active tuberculosis case in rural areas were explored.ResultsThe main factors of tubercu losis incidence among people in close contact with active tubercu losis case inrural areas were the contact number,the ventilation condition of living environment, the cough and fever of the TB patient.ConclusionTo streng then health education,to improve ventilation condition of living environment, and to screen TB patient among the colse contactors with TB patient having cough or fever timely could decrease the incidence of TB and diagnose TB patiants in time.