ObjectiveTo investigate the psychological status and its influencing factors of hospital staff during the outbreak of coronavirus disease 2019 (COVID-19), and provide a reference for psychological intervention strategies for hospital staff in public health emergencies.MethodsIn this cross-sectional study, we investigated the staff of Mianzhu People’s Hospital through an anonymous questionnaire survey sent through WeChat group from February 13th to 18th, 2020, to analyze the psychological situation and influencing factors of the on-the-job staff. SPSS 22.0 software was used for statistical analysis.ResultsAmong the 1 115 staff members who met the inclusion criteria, 951 completed the questionnaire, with a response rate of 85.3%. There were 945 valid questionnaires, with an effective response rate of 84.8%. A total of 224 staff members (23.7%) had mental health problems. Multivariate logistic regression analysis showed that the total scores of social support [odds ratio (OR)=0.869, 95% confidence interval (CI) (0.805, 0.938), P<0.001] and the total scores of stress coping strategies [OR=0.685, 95%CI (0.607, 0.772), P<0.001] were protective factors of psychological status, while having kids [OR=1.607, 95%CI (1.084, 2.382), P=0.018] and the position being logistic worker [OR=2.229, 95%CI (1.326, 3.746), P=0.002] were risk factors of psychological status.ConclusionsDuring the outbreak of COVID-19, mental health problems emerged among the staff of designated medical treatment hospital. When a public health emergency occurs, hospitals and relevant departments should take psychological intervention measures as soon as possible to ensure the work of epidemic prevention and control.