Abstract: Objective To investigate the current situation of mental climate,work motivation and work performance of clinical nurses in grade-A tertiary hospitals,and to explore the influence of mental climate and work motivation on the work performance of clinical nurses. Methods From February to March 2024,1 476 clinical nurses from 12 grade-A tertiary hospitals in Sichuan Province were selected as the research objects by convenient sampling method. The spiritual climate scale,the work motivation scale and the job performance scale were used for investigation,and the data were analyzed. Results The scores for mental climate,work motivation and job performance of clinical nurses in grade-A tertiary hospitals were （16.22±2.60）,（30.60±5.31） and（41.42±5.81）points,respectively. Univariate analysis showed that there were statistically significant differences in the job performance scores of clinical nurses with different genders,marital and reproductive status,highest academic qualifications,departments,professional titles,employment methods,working years,night shiftsrotation,self-rated health status,and self-rated sleep quality（all P<0.05）. Pearson correlation analysis showed that the mental climate of clinical nurses in grade-A tertiary hospitals was positively correlated with job performance scores（r=0.403-0.482,all P<0.05 ）. There was a positive correlationship between work motivation and job performance score（r=0.368-0.532,all P<0.05）. Hierarchical regression analysis showed that after controlling general demographic data,internal and external work motivation and mental climate still had a significant predictive effect on job performance（β=0.302,0.090,0.211,all P<0.05 ）,which independently explained 33.3% of the influencing factors of job performance. Conclusion The job performance of clinical nurses in grade-A tertiary hospitals is at a high level,and mental climate and work motivation are important protective factors. Managers should pay attention to the job performance of nurses,enhance their work motivation,and create a good spiritual and cultural atmosphere,so as to improve the work behavior and results of clinical nurses and ensure the safety of patients.

Key words: Nurse, Job performance, Work motivation, Spiritual climate, Influencing factors