Abstract: Objective To explore the relationship between salary fairness and turnover intention of nurses,and the mediating effect of salary satisfaction and professional identity between the two. Methods A cross-sectional study was conducted to select 683 nurses from 12 grade-A tertiary hospitals in Sichuan Province from August to October 2021. They were investigated by the general information questionnaire,salary fairness scale,turnover intention scale,salary satisfaction scale and professional identity scale. The data were analyzed by the descriptive analysis,correlation analysis and structural equation model. Results The scores of turnover intention,salary fairness,salary satisfaction and professional identity in 683 nurses were （14.10±2.63）,（49.50±9.30）,（138.10±21.38） and （95.48±14.77）points,respectively. The correlation analysis showed that the salary fairness was negatively correlated with turnover intention（r=-0.181--0.638,all P<0.05）,the salary satisfaction was negatively correlated with turnover intention（r=-0.256--0.628,all P<0.05）,and the professional identity was negatively correlated with turnover intention（r=-0.194--0.634,all P<0.05）. The salary fairness affected the turnover intention of nurses through the mediating effect of salary satisfaction and professional identity,with mediating effects of -0.087 and -0.115 respectively（both P<0.05）. The salary fairness predicted nurses' turnover intention through chain mediating effect of salary satisfaction and professional identity,and the chain mediating effect was -0.045（P<0.05）. Conclusion The level of turnover intention of nurses ingrade-A tertiary hospitals is high,salary satisfaction and professional identity play a chain mediating role in the relationship between nurses' sense of salary fairness and turnover intention,and the improvement of salary satisfaction and professional identity is the internal cause of nurse' reduced turnover intention induced by salary fairness.

Key words: Public hospitals, Nurses, Turnover intention, Salary fairness, Salary satisfaction, Occupational identity