目的　调查潜水员的防御机制和个性特征 ,并分析二者的关系。方法　采用防御方式问卷 (DSQ )和卡特尔 16种个性因素问卷 ( 16PF)对 414名海军潜水员进行团体测验。结果　潜水员主要应用成熟防御机制 ,防御机制分以期望最高 ,升华次之 ,但压抑偏高 ,幽默偏低 ;防御机制与个性之间相关显著。结论　潜水员防御机制的成熟程度较高 ,受个性的影响较大 Objective To investigate the diver’s defense mechanism and personality characteristics and to analyze the relationship between the two. Methods A total of 414 naval divers were grouped using the Defense Questionnaire (DSQ) and the Cartel 16 Personality Factors Questionnaire (16PF). Results Divers mainly used the mature defense mechanism. The defense mechanism was sub-optimal with the highest expectation and sublimation, but the depression was high and the humor was low. The correlation between defense mechanism and personality was significant. Conclusion Diver defense mechanisms are more mature and more affected by individuality