The COVID-19 pandemic had exacerbated risk factors associated with suicidal behaviour,but the latest data suggested that suicide rates had generally not increased in the early months of thepandemic. Given the complex impact of COVID-19 on suicide, this study systematically reviewed theincidence of suicide/suicide attempts and trends in suicide rates from different countries during theCOVID-19 pandemic, analyzed the possible causes, and made some recommendations for preventingsuicide deaths and suicide attempts during similar pandemic.