Objective To approach the correlation of upper airway and surrounding tissues with body mass index （BMI） of non- apnea aged males. Methods Thirty- one non- apnea aged from 70 years to 84 years males（all were inspected by polysomnography and apnea hyponea index0.05）. Conclusion The forms of sectional areas of velopharynx are subjected to body mass, and with the increasing of body mass they tend to round. In non- apnea aged males, the distance of fatpads and ascending rami have intimate relationship with body mass and BMI. The volume of soft palate, tongue, fatpads and velopharyngeal walls has little things with body mass and BMI.
