In January 2020, the corona virus disease (COVID-19) outbreak was a public health emergency. In the event of an epidemic outbreak, frontline medical workers are exposed to hazards including pathogen exposure, long working hours, psychological distress, fatigue, occupational burnout, stigma, and physical and psychological violence. Supportive intervention is needed when they are experiencing signs of psychological or behavioral abnormalities resulting from undue stress. The psychological and social impact on those who experienced a public health crisis is profound. People who were previously mentally ill will be even more vulnerable in emergency situations. Due to the tragic nature of the public health crisis and its adverse effects on mental health, the provision of mental health training and services to the medical staff for specific, urgent mental health issues is a part of public health response measures. It is important to note that public health emergency is not solely a tragedy, but also an enormous opportunity for medical staff to establish mental health services.