Objective: To explore the personality characteristics of military parachutists and levels of parachute stress on SHG. Methods: Subjects were measured under three separate time conditions: 24 hours before parachuting, just boarding aircraft, and immediately after landing. Personality characteristics were measured by EPQ, whereas SHG was assessed by RIA. Results: (1) Levels of SHG were significantly increased at time of boarding the aircraft as compared to 24 hours before parachuting. (2) Excellent military parachutists tended to score high on extraversion, low on psychoticism, and low on emotionality. (3) Lower levels of SHG were obtained for demonstration parachutists as compared to the non-demonstration group. Conclusion: SHG was a sensitive stress index for gauging levels of stress response. Objective: To explore the personality characteristics of military parachutists and levels of parachute stress on SHG. Methods: Subjects were measured under three separate time conditions: 24 hours before parachuting, just boarding aircraft, and immediately after landing. Personality characteristics were measured by EPQ, while SHG was assessed by RIA. Results (1) Levels of SHG were highly increased at time of boarding the aircraft as compared to 24 hours before parachuting. (2) Excellent military parachutists tended to score high on extraversion, low on psychoticism, and low on emotionality. (3) Lower levels of SHG were obtained for demonstration parachutists as compared to the non-demonstration group. Conclusion: SHG was a sensitive stress index for gauging levels of stress response.