目的:调查了解长航期间舰艇官兵口腔溃疡的发生率及其影响因素。方法:采用自行设计的健康调查问卷,对某部海上长航官兵274例进行口腔溃疡发生情况调查。结果:口腔溃疡发生率为48.5%,与饮食习惯、体力消耗、胃肠道疾病等呈显著正相关。结论:长航期间应改变舰艇官兵饮食习惯,降低口腔溃疡的发生率。 Objective: To investigate and understand the incidence and influencing factors of oral ulcers in naval vessels during the long flight. Methods: A self-designed questionnaire was used to investigate the occurrence of oral ulcers in 274 cases of officers and men of a certain long-haul marine vessel at sea. Results: The incidence of oral ulcer was 48.5%, which was positively correlated with diet, physical exertion and gastrointestinal diseases. Conclusion: The long-term navigation should change the naval officers and men eating habits, reduce the incidence of oral ulcers.