目的 探讨心理资本在肿瘤科护士工作压力与组织公民行为间的中介作用。 方法 2020年10月,采用便利抽样法选取某市某三级甲等医院的112名肿瘤科护士。采用一般资料调查表、中国护士工作压力源量表、护士组织公民行为量表、心理资本问卷对其进行测评。 结果 肿瘤科护士组织公民行为条目均分为（4.15±0.42）;工作压力条目均分为（2.94±0.74）;心理资本条目均分为（4.07±0.94）。结构方程模型结果显示,肿瘤科护士工作压力对组织公民行为具有负向作用（β=-0.331,P<0.001）,心理资本对组织公民行为具有正向作用（β=0.263,P<0.001）,护士工作压力通过心理资本对组织公民行为产生间接作用（间接效应值为-0.106）,占总效应的24.26%。 结论 肿瘤科护士的组织公民行为有待提升,护理管理者应当制订相应的措施降低肿瘤科护士工作压力,提高护士自我效能及面对逆境时的乐观及韧性,鼓励护士更多地参与到科室建设与管理中,保证肿瘤科护理团队稳定高效发展。

Objective To explore the mediating effect of psychological capital on the relationship between job stress and organizational citizenship behavior among oncology nurses. Methods In October 2020,a total of 112 oncology nurses from a tertiary hospital in Shanghai were selected by convenience sampling,and were investigated by the general information questionnaire,the Chinese Nurses Stressor Scale,the Organizational Citizenship Behavior Scale,and the Psychological Capital Questionnaire. Results The total average score of organizational citizenship behavior in oncology nurses was 4.15±0.42,the total score of job stress was 2.94±0.74,and the total score of psychological capital was 4.07±0.94. Path analysis showed that oncology nurses' work stress had a negative effect on organizational citizenship behavior（β=-0.331,P<0.001）,and psychological capital had a positive effect on organizational citizenship behavior（β=0.263,P<0.001）. Nurses' work stress had an indirect effect on organizational citizenship behavior through psychological capital（indirect effect value of -0.106）,accounting for 24.26% of the total effect. Conclusion The organizational citizenship behavior of oncology nurses needs to be improved. Nurse managers should develop corresponding measures to reduce the job stress of oncology nurses,improve nurses' self-efficacy,optimism and resilience for coping with adversity,and encourage nurses to participate more in department construction and management to ensure the stable and efficient development of the oncology nursing team.