Abstract: Objective: To explore the status quo of professional identity level and its related factors among operating room nurses. Methods: Method of stratified cluster sampling with a total of 187 operating room nurses from 10 hospitals in Jiangsu province were recruited and surveyed with the Work Empowerment Scale and Professional Identity Rating Scale. Results: The total score of work empowerment was 15.37±2.32. The mean score of professional identity was 98.37±11.32. There were significant positive correlations between two scores.Regression analysis showed that the factor scores of work empowerment such as opportunity, information, formal power and informal power could independently explain 41% of the variance for nurses' professional identity after controlling demographic variables. Conclusion: Hospital administrators should focus on the shortcomings of work empowerment and take effective measures to improve nurses'professional identity and promote the development of nursing.