Objective To explore the latent profile of core competency in emergency trauma nurses and to analyze the influencing factors of different classes, so as to provide references for nursing managers to conduct relevant training to enhance the core competencies of this population.Methods Nine hundred and thirty emergency trauma nurses from secondary level and above hospitals in 22 provincial administrative regions were selected during August to December 2024, then they were investigated by using a general information questionnaire, the Simplified Chinese Trauma Advanced Practice Nurses′ Core Competency Scale, the Utrecht Work Engagement Scale and the Trait Coping Style Questionnaire.The latent profile analysis for the core competency characteristics of emergency trauma nurses was conducted, and the influencing factors of their potential classes were identified by logistic regression analysis.Results The core competency score of the participants was 102.0（84.0,126.0）, which was divided into three potential ca-tegories:basic group （28.1%）, advanced group （44.7%） and professional group （27.2%）.The results of logistic regression analysis showed that, gender, hospital level, construction unit of trauma treatment center of China Trauma Rescue &Treatment Association, trauma nursing training experience, working years of trauma nursing and work engagement were the influencing factors of different core competency categories in emergency trauma nurses （all P＜0.05）.Conclusion There is group heterogeneity in the core competency among emergency trauma nurses. Nursing managers should conduct targeted training according to the profile type and influencing factors of the core competency of emergency trauma nurses,so as to improve their core competency.