Coronavirus disease 2019 (COVID-19) was first reported in late December 2019, and then erupted in China. COVID-19 is characterized by strong infectivity and a high mortality rate. The public and medical staff are under great psychological pressure. Scholars at home and abroad have carried out researches on mental health during the outbreak of COVID-19. This article summarizes the current researches on mental health related to COVID-19 from three aspects:mental health policy, mental intervention measures and mental health of key population.