Purpose: This study was done to investigate the relation between psychiatric nurse image, job satisfaction and assertiveness of psychiatric mental health nurses. Methods: The participants for this study were 159 psychiatric nurses in G-city and J-province. The instruments were the Psychiatric Nurses Image Scale, Job Satisfaction Scale, and Assertiveness Scale. Collected data were analyzed using mean, t-test, ANOVA, and Pearson`` correlation coefficients with the SPSS/WIN 20.0 program. Results: Mean scores for psychiatric nurse image, job satisfaction, and assertiveness, were 3.9±0.5 and 3.3±0.4 and 93.5±12.0 respectively. Significant positive correlations were found between psychiatric nurse image and job satisfaction (r=.51, p<.001), and assertiveness (r=.25, p=.002). Conclusion: The result indicate that nurses with higher levels of psychiatric nurses image disposition exhibit positive job satisfaction, and assertiveness. Therefore it would be helpful to provide intervention programs to improve the psychiatric nurse image, job satisfaction, and assertiveness of psychiatric nurses.