Objective : The purpose of this study is to report the effect of Korean medicine treatment on rhinosinusitis by showing OMU(ostiomeatal unit) CT(computed tomography). Methods : The clinical study was done on 5 cases of rhinosinusitis patients diagnosed by OMU CT. The patients were treated with herbal medicine and acupuncture. OMU CT was taken after treatment. Results & Conclusions : After treatment, 5 rhinosinusitis patients were improved in symptoms and remarkable resolutions of rhinosinusitis in OMU CT were observed. These results suggest that Korean medical therapy could be a safe and effective intervention in rhinosinusitis and we need to have more studies for objective evaluations of Korean medicine treatment.