OBJECTIVE Study the correlation be- tween the anatomical abnormalities of upper airway examined by computer fiberoptic pharyngocopy with Mull er ’s maneuver (CFPMM) and out comes of polysomnography(PSG).METHODS Sixty patients with obstructive sleep apnea hypopnea syndrome (OSAHS) underwent the examination of computer fiberoptic pharyngocopy with Muller’s maneuver CFPMM and polysomnography. And analysed the re- lationship between the anatomical abnormalities of upper airway and ser ious of patients' sleep breath disturbance.RESULTS Diminished pharyngeal apertures and collapsibility were associated with in- creased rates of apnea and hypopnea index (P 0.05). CONCLUSION The anatomical abnormalities of UA of patients can reflect the severity of the OSAHS.