Objective   To explore influencing factors of psychological intention for influenza vaccination among medical staff in Qingdao city, Shandong province and to provide references for promoting vaccination of influenza vaccine in the staff.

  Methods  Using intentional sampling and stratified sampling, we recruited 3 720 medical staff in three tertiary/secondary hospitals and 9 grassroots medical institutions in Qingdao city and conducted a self-administered survey on psychological intention for influenza vaccination and its associates among the staff with a self-designed questionnaire in January 2019.

  Results  Of the 3507 valid respondents, 413 (11.8%) reported the uptake of influenza vaccine; the respondents′ mean score of psychological intention for influenza vaccination was 37.3 ± 4.25, with the lowest score of 12 and the highest of 60. Stepwise multivariate linear regression analysis demonstrated that the respondents′ score of psychological intention for influenza vaccination was correlated positively with their health status, weekly time of direct contact with patients, the degree of the hospital, and vaccination-related recommendation from supervisors or colleagues but reversely with acquired information on vaccination-related adverse events.

  Conclusion  Among the medical staff in Qingdao city, the score of psychological intention for influenza vaccination was relatively low and mainly influenced by the staff′ s health status, weekly time of direct contact with patients, hospital degree, vaccination-related recommendation from supervisors or colleagues, and acquired information on vaccination-related adverse events.