Abstract: Objective　To investigate the relationship between the incidence of chronic rhinosinusitis and the deviation of nasal septum in junior middle school students.　Methods　A total of 1910 junior middle school students aged 12~15 years in Zhengzhou city were randomly selected as the object of investigation by questionnaire, sino-nasal outcome test (SNOT-22), visual analogue scale (VAS) and nasal examination. According to the statistical results and the signs of examination, the prevalence of chronic rhinosinusitis and nasal septum deviation in junior middle school students were investigated, and the correlation between nasal septum deviation and the incidence of chronic rhinosinusitis was analyzed by statistical methods.　Results  The prevalence rate of chronic rhinosinusitis of the junior middle school students was 6.2%（119/1910）. In patients with chronic rhinosinusitis, the prevalence rate of mild-to-moderate nasal septum deviation was 27.7% (33/119). In patients without chronic rhinosinusitis, the prevalence rate of nasal septum deviation was 31.2% (559/1791). There was no statistical difference between the prevalence of two groups（x2=0.632，P>0.05）.  In patients with chronic rhinosinusitis, the prevalence rate of severe nasal septum deviation was 13.4% (16/119). In patients without chronic rhinosinusitis, the prevalence rate of nasal septum deviation was 8.0% (144/1791). There was statistical difference between the prevalence of two groups（x2=4.248，P<0.05）. Conclusions　The incidence of chronic rhinosinusitis is associated with severe nasal septum deviation in junior middle school students.

Key words: Junior middle school students, 　Nasal septum deviation, 　Chronic rhinosinusitis, 　Visual analogue scale, 　Sino-nasal outcome test-20