Objective:To provide a reference and basis for developing more targeted and effective intervention measures for the mental health of officers and soldiers stationed on islands and reefs in a certain sea area of China.Methods:Based on the previous studies，the research group conducted a cross-sectional survey on the mental health and sleep status of the officers and soldiers of different specialties stationed on islands and reefs in a certain sea area，and evaluated the mental health and sleep status of officers and soldiers of different specialties stationed on islands and reefs for the first time.Results:Among the officers and soldiers in the survey，106 were with suboptimal mental health status，accounting for 23.77% of all objects of study. Among them，there were 42（29.37%）in the ground unit group，41（20.92%）in the aviation unit group，18（30.51%）in the observation unit group，and 5（10.42%）in the electronics unit group. There were statistically significant differences among the 4 groups（ P=0.023）. The total average SCL-90 scores of the ground unit group，the aviation unit group，the observation unit group，and the electronics unit group were 1.35，1.25，1.36，and 1.20，respectively. The total scores of SCL-90 were 121.10，112.73，122.02，and 108.17，respectively. Among the officers and soldiers in the 4 groups，there were statistically significant differences in the factors and in total scores of SCL-90，i.e.，somatization，obsessive-compulsive symptoms，interpersonal sensitivity，depression，anxiety，paranoia，sleep，and diet（ P < 0.05）. After adjusting for other factors，the results of pairwise comparison showed the aviation unit group was superior to the ground unit group. The average PSQI scores of the ground unit group，the aviation unit group，the observation unit group，and the electronics unit group were 9.1，7.5，8.5，and 5.5，respectively. There were statistically significant differences in sleep quality score，sleep time score，sleep efficiency score，hypnotic drugs score，daytime function score，and in the PSQI total scores among the 4 groups（ P<0.05）. Conclusion:The officers and soldiers in the ground unit and observation unit stationed on islands and reefs in a certain sea area of China have a relatively poor mental health and sleep status. The length of time on the islands and reefs affects mental health and sleep. A more scientific regular rotation scheme should be developed.

Objective:To provide a reference and basis for developing more targeted and effective intervention measures for the mental health of officers and soldiers stationed on islands and reefs in a certain sea area of China.Methods:Based on the previous studies，the research group conducted a cross-sectional survey on the mental health and sleep status of the officers and soldiers of different specialties stationed on islands and reefs in a certain sea area，and evaluated the mental health and sleep status of officers and soldiers of different specialties stationed on islands and reefs for the first time.Results:Among the officers and soldiers in the survey，106 were with suboptimal mental health status，accounting for 23.77% of all objects of study. Among them，there were 42（29.37%）in the ground unit group，41（20.92%）in the aviation unit group，18（30.51%）in the observation unit group，and 5（10.42%）in the electronics unit group. There were statistically significant differences among the 4 groups（ P=0.023）. The total average SCL-90 scores of the ground unit group，the aviation unit group，the observation unit group，and the electronics unit group were 1.35，1.25，1.36，and 1.20，respectively. The total scores of SCL-90 were 121.10，112.73，122.02，and 108.17，respectively. Among the officers and soldiers in the 4 groups，there were statistically significant differences in the factors and in total scores of SCL-90，i.e.，somatization，obsessive-compulsive symptoms，interpersonal sensitivity，depression，anxiety，paranoia，sleep，and diet（ P < 0.05）. After adjusting for other factors，the results of pairwise comparison showed the aviation unit group was superior to the ground unit group. The average PSQI scores of the ground unit group，the aviation unit group，the observation unit group，and the electronics unit group were 9.1，7.5，8.5，and 5.5，respectively. There were statistically significant differences in sleep quality score，sleep time score，sleep efficiency score，hypnotic drugs score，daytime function score，and in the PSQI total scores among the 4 groups（ P<0.05）. Conclusion:The officers and soldiers in the ground unit and observation unit stationed on islands and reefs in a certain sea area of China have a relatively poor mental health and sleep status. The length of time on the islands and reefs affects mental health and sleep. A more scientific regular rotation scheme should be developed.