| At the end of December 2019, viral pneumonia caused by unknown microorganisms is reported in Wuhan, China. Studies confirmed that a novel coronavirus was identified, namely severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). In February 2020, WHO officially named SARS-CoV-2-infected pneumonia as coronavirus disease 2019 (COVID-19). With the research progress on SARS-CoV-2 and its incurred pneumonia, SARS-CoV-2 characteristics, COVID-19 clinical and epidemiological features, clinical diagnosis and treatment technology have been reported in domestic and foreign journals. In this article, the existing COVID-19 researches, and review 5 aspects such as traceability analysis, detection methods, clinical manifestations, drug development and viral transmission were summarized, with expectations to provide assistance for clinicians and scientific researchers. |