Objective : The purpose of this study is to investigate the difference of pathogenesis between tinnitus patients group and healthy volunteers group by using DSOM (Diagnostic system of Oriental Medicine). Methods : Patients group is consisted of people who do not have any disorder except tinnitus, and healthy volunteers group is consisted of people who do not have any special symptom and past history. DSOM was used for pathogenesis investigation of these two groups. Results : There were significant differences between volunteers group and patients group in blood (血虛), dampness (濕), phlegm (痰) (p<0.05), In gender of patients group, deficiency of blood (血虛) was shown with female group statistically more than male group (p<0.05). On the other hand, with volunteers group, there was negligible difference between male and female. In age (over and below 50years), noticeable deficiency of blood (血虛) was shown in patients group. Especially, the old people who are over 50 years showed more deficiency of blood (血虛) than younger group (under 50 years) (p<0.05). With volunteers group, there was only negligible difference. Conclusion : This result showed definite difference in the pathogenesis between tinnitus patiensts group and healthy volunteers group.