Background: Emotional intelligence has a protective role on psychological capital and performance enhancement of psychiatric nurses which can be effective against burnout. Purpose: To evaluate the effect of emotional intelligence-based training program on burnout, psychological capital, and job performance among psychiatric nurses. Research design: A quasi-experimental design was used to achieve the purpose of the study. Setting:  The study was conducted at the Psychiatric Mental Health Hospital in Benha City. Sampling: A purposive sample of 60 psychiatric nurses was chosen. Instruments: Five different instruments were used Socio-Demographic Data, Emotional Intelligence scale, Maslach Burnout Inventory to determine burnout level among nurses, Psychological Capital scale, and Job Performance Scale. Results: There was a highly statistically significant negative correlation between emotional intelligence and burnout among nurses, and a highly statistically significant positive correlation between emotional intelligence and psychological capital and job performance among studied nurses following program implementation. Conclusion: These results provide evidence of the efficacy of the emotional intelligence training program in reducing burnout and increasing level of emotional intelligence, psychological capital and performance of studied nurses. Recommendations: In-service training programs in the field of emotional intelligence for nurses for increasing nurse's ability to control and regulate emotions, reducing burnout and improving level of performance.