Objective To investigate the level and influencing factors of risk perception of "online nurse-hailing" services among nurses in Jiangsu province.Methods A total of 219 nurses who were working in 21 hospitals in Jiangsu province and provided "online nurse-hailing" services were surveyed by using a demographic questionnaire, the Chinese Nurses′ Risk Perception Questionnaire, the Positive and Negative Affect Scale, the General Self-efficacy Scale, and the Brief Version of Goldberg′s Unipolar Big-Five Markers.Results The total score of risk perception was （58.33±17.75）, with the scoring rate of 41.66%.The total risk perception score was positively correlated with the negative affect score, whereas negatively correlated with general self-efficacy score, as well as the scores of extraversion, agreeableness, conscientiousness and neuroticism in the big five personalities （all P＜ 0.05）.Multiple linear regression analysis showed that working in surgical department and outpatient department, the number of nurses worked together for each customer order in the past six months, the number of orders received in the past year, risk familiarity, negative affect, and neuroticism were factors affecting risk perception among nurses （all P＜0.05）, explaining 36.4% of the total variance.Conclusion The risk perception of "online nurse-hailing" services among nurses is at a low level, which is affected by various factors.Managers should formulate corresponding measures based on the influencing factors to improve nurses′ risk perception and ensure personal safety.