Objective To investigate the oral health of officers and soldiers in a navy unit.Methods From September to December 2022,a questionnaire survey and oral examination were conducted in 1 923 officers and soldiers of a navy unit.The incidence of caries,periodontal problem,the third molar impaction,and dental deficiency and defect were analyzed.Results Among the interviewees,51.79%took up smoking,79.88%brushed their teeth daily≥2 times,64.01%brushed their teeth≥3 min,32.97%used cleaning tools other than toothbrushes.The incidence of caries was 23.40%,the incidence of gingivitis and periodontitis was 28.97%,the detection rate of dental calculus was 64.33%,and the total detection rate of pigment teeth was 46.33%.The defect of dental body,residual roots,temporomandibular joint disorders,defect of dentition,and molar impaction accounted for 4.32%,2.81%,11.6%,40.72%,and 68.28%,respectively.Conclusion The oral health status of the shipboard personnel is still poor,so it should be targeted to further strengthen oral health care and popular science propaganda.