Abstract: Objective To put forward suggestions for preventing obstructive sleep apnea-hypopnea syndrome (OSAHS) in aviation medical support by investigating snoring in pilots of modified fighters. Methods Snoring in healthy pilots of high performance modified fighters admitted to our hospital from September 2008 to May 2012 was investigated with self-designed sleep questionnaire and Epwoth sleepiness scale (ESS), respectively. Their neck circumference, body height and weight were measured. The incidence of snore in them was calculated. Headache, daytime drowsiness, decreased memory and mistaken maneuver during flight were compared between snoring and non- snoring fighter pilots. Results The average sleep time and average ESS score were 7.71 h and 6.79, respectively for the fighter pilots. The incidence of snoring was 22.94% in all the investigated fighter pilots and 37.5%in those aged over 35 years. The incidence of headache in the morning, decreased memory and mistaken maneuver during flight, the neck circumference, BMI and ESS score were significantly higher in the snoring pilots than in non-snoring pilots (P＜ 0.05). Conclusion To some extent, fighter pilots with snore at sleep are at risk to air safty, and should thus be followed up.