Objective: To investigate the mental health status of the soldiers during field training.Methods: A total of 1259 military-men were administered the SCL-90 during field training. Results were compared with the Chinese norms for the army. Results: The SCL-90 total score was 153.42±43.36. The number of endorsed positive symptom items and the mean score of positive symptom items were 36.32±12.61 and 1.71±0.35, respectively. The mean factor score were significantly higher when compared with the Chinese norms for the army (P<0.001). For military men having their first field training, the mean factor scores of SCL-90 were remarkably higher than the Chinese norms for the army (P<0.001). Conclusion: Psychological symptoms of military men were significantly elevated during land and sea field-training.