Objective:To investigate the therapeutic effect of functional endoscopic sinus surgery for noninvasive fungal rhinosinusitis. Methods:Clinical data of 42 patients suffering from non-invasive fungal rhinosinusitis confirmed pathologically from 2009 to 2011 was analyzed retrospectively. The analyzed data included endoscopic examination, sinus CT scan, clinical manifestations, and surgical outcome. Results:Postoperative pathological observations displayed fungi and hyphae in all specimens. All the 42 patients were followed up for more than one year postoperatively without recurrence. Conclusions:Adequate drainage of nasal cavity and paranasal sinuses and complete removal of fungal masses from sinus cavity are essential for successful management of noninvasive fungal rhinosinusitis.