Abstract: Objective To compare the hearing data between army helicopter pilots and air-force fighter pilots and observe the difference between them. Methods Hearing data about 157 helicopter pilots in the army aviation unit and 105 fighter pilots in air-force unit who were qualifed for fying were collected, and the pure tone test (PTA) in 0.25, 0.5, 1, 2, 3, 4, 6, 8 kHz, speech frequency, the total frequency auditory threshold distinction between left and right ears and the incidence rate of noise deafness in two groups were examined. Results In 0.25 kHz, the average auditory threshold of helicopter pilots (left ear 9.78±5.50, right ear 9.27±4.49) were less than that of fghter pilots (left ear 11.52±3.41, right ear 10.86±2.54) with signifcant differences (t=2.903, t=3.648, P< 0.01). In 0.5 kHz, the average auditory threshold of helicopter pilots (left ear 9.59±4.12, right ear 8.89±3.95) were less than that of fghter pilots (left ear 10.71±2.34, right ear 10.43±1.98) with signifcant differences (t=2.817, t=4.179, P< 0.01). In speech frequency, the right ear average auditory threshold of helicopter pilots (9.85±3.79) were less than that of fghter pilots (10.75±2.39) with signifcant difference (t=2.356, P< 0.05). In total frequency, the average auditory threshold of helicopter pilots (10.66±4.09) were less than that of fghter pilots (11.60±2.89) with signifcant difference (t=2.027, P< 0.05). No signifcant differences were found in other frequency and the incidence rate of noise deafness between two groups. All pilots had achieved the standard of pure tone auditory threshold in fying personnel physical examination. Conclusion The hearing condition of helicopter pilots is better than that of fghter pilots, which is concerned with the shelter consciousness in helicopter pilots.