Objective To known about the status of first-aid techniques among naval primary healthcare personnels, providing reference for improving the related first-aid training. Methods A self-made questionnaire was created based on the naval training activities of mass war wound rescue and the requirements of new guidelines and assessment standards. The questionnaire was used to investigate 172 primary naval healthcare personnels. The first aid techniques were divided in well-mastered, mastered, unskilled and un-mastered. And our analysis focused on the first-aid training of war wound and the mastery of first-aid techniques. Results The naval primary healthcare personnel well mastered the six traditional first-aid techniques, including hemostasis, ventilation, bandaging, fixation, handling, and cardiopulmonary resuscitation. Techniques such as infusion via bone, advanced airway management were not well-mastered, or even hard to master. Conclusion To improve war wound rescue capability of primary naval healthcare personnels, we should continue the training activities of mass war wound rescue, improve the related theory, strengthen the related training, and establish a practical war wound rescue training and evaluation system.