ABSTRACT This study investigated the impact of emotion regulation training on nurses, which is crucial for enhancing their emotional well‐being and job performance. We implemented a psychoeducation program to help nurses effectively manage emotional distress and examined how this training affected their use of cognitive reappraisal and suppression strategies. The quasi‐experimental study was conducted from January to June 2020, involving 72 nurses (36 in the training group and 36 in the control group) from a university hospital. We used descriptive statistics and repeated measures ANOVA for data analysis. The results indicate that the training group had significantly higher cognitive reappraisal scores than the control group, with scores increasing significantly at post‐test, 1 month, and 3 months after training ( F = 24.41; p < 0.001). Additionally, suppression scores decreased significantly for the training group compared to the control group. Our findings demonstrate that emotion regulation training is more effective than the control condition for cognitive reappraisal and suppression strategies in the training group. Future research should explore additional strategies to further enhance emotion regulation skills, potentially improving job performance and patient care.