This paper seeks to evaluate how psychological first aid (PFA) plays a role in emergency medical services during crisis events and thus contributes to mental health needs. The article provides a thorough analysis of literature, methodologies, results, and discussions covering the extent of PFA's effectiveness in helping individuals who have psychological distress in times of emergency crisis. Significant outcomes of research indicated that workplace PFA should be the key priority in EMS environments to ensure prompt intervention and avoid long-term mental health problems. We suggest considering possible directions for further research and practice.