Objective To explore the moderating role of emotional regulation strategies between coping styles and resilience among emergency nurses exposed to workplace violence, so as to provide a foundation for nursing managers to implement targeted management measures. Methods A total of 239 emergency nurses after exposure to workplace violence in tertiary hospitals in Shanghai were selected, then they were investigated by using a general information questionnaire, the Chinese version of the Connor-Davidson Resilience Scale 10, the Emotion Regulation Questionnaire, and the Trait Coping Style Questionnaire. Results The participants′ resilience score was (27.42±7.44).Cognitive reappraisal, expressive inhibition and positive coping were positively associated with resilience among the nurses, while negative coping was negatively correlated with their resilience (all P＜0.05); positive coping directly predicted resilience, and cognitive reappraisal (β=-0.022,P＜0.05) and expressive inhibition (β=-0.031,P＜0.05) moderated the direct effect of positive coping on resilience. Conclusion The resilience among emergency nurses after workplace violence is at a low level, and emotion regulation strategies can enhance the impact of positive coping on their resilience.Improving their positive coping and assisting them in increasing the number of uses of emotion regulation strategies could enhance their resilience, reduce the adverse effects of workplace violence, and maintain their physical and mental health.