Abstract: Objective To explore the influence of occupational plateau and psychological capital on job burnout of nurses in some grade-A tertiary hospitals in Haikou City. Methods From October to December 2022,the convenient sampling method was used to select 1 100 nurses from five grade-A tertiary hospitals in Haikou City as the subjects of investigation,and they were investigated and analyzed by the general situation scale,occupational plateau scale,psychological capital scale and occupational burnout scale. Results The scores of occupational plateau,psychological capital and job burnout among nurses in some grade-A tertiary hospitals in Haikou City were （52.38±8.41）,（85.46±10.52） and （64.74±11.32）points,respectively. The occupational plateau was positively correlated with job burnout（r=0.428,P<0.01）,the occupational plateau was negatively correlated with psychological capital（r= -0.531,P<0.01）,and the job burnout was negatively correlated with psychological capital（r=-0.489,P<0.01）. The occupational plateau directly affected job burnout,and indirectly affected job burnout through psychological capital,and the mediating effect of psychological capital was 0.254,accounting for 40.70% of the total effect. Conclusion There are correlations between occupational plateau,psychological capital and job burnout of nurses in some grade-A tertiary hospitals in Haikou City,the occupational plateau not only directly affects job burnout,but also indirectly affects job burnout through psychological capital.

Key words: Nurse, Grade-A tertiary hospital, Occupational plateau, Psychological capital, Job burnout