ObjectiveTo investigate the current situation and influencing factors of clinical nurses’ clinical decision-making ability， and provide a reference and evidence for improving and enhancing the correct clinical decision-making ability of clinical nurses. MethodsA total of 300 clinical nurses in Shaanxi Province were selected as the research subjects by using the convenience sampling method. The General Information Questionnaire， Clinical Decision-Making Scale， and Comprehensive Decision-Making Style Scale were used to conduct the investigation and study. The influencing factors of clinical nurses’ clinical decision-making ability were analyzed by using single-factor analysis and multivariate linear regression. ResultsThe total score of clinical nurses’ clinical decision-making ability was （163.85±13.78） points， reaching the high-level standard of clinical decision-making ability （146.68-200.00） points. The results of Spearman rank correlation analysis showed that there was a significant positive correlation between the total score and the score of each dimension of clinical decision-making ability and the score of rational decision-making style （P<0.05）. The score of the dimension of searching for information or new information was only negatively correlated with the score of intuitive-impulsive decision-making style （P<0.05）. Avoidant decision-making style was negatively correlated with the scores of seeking information or new information， clarifying goals and values， the total score of clinical decision-making ability， and the dimensions of finding alternative solutions （P<0.05）. The results of multiple linear regression showed that rational decision-making style can positively affect clinical nurses’ clinical decision-making ability， while avoidance decision-making style can negatively affect it. ConclusionThe clinical nurses’ clinical decision-making ability has been maintained at a relatively constant high level， and it is greatly influenced by rational and avoidant decision-making styles. Medical managers need to organize targeted training activities and other measures to promote the construction of clinical nurses’ rational decision-making style and minimize the influence of avoidant decision-making style， thus improving the clinical nurses’ clinical decision-making ability.