Guidelines for the diagnosis and treatment of coronavirus disease 2019 (COVID-19) in China.

With the deepening of the understanding and research in coronavirus disease 2019 (COVID-19), the diagnosis and treatment of COVID-19 have been constantly updated and improved. In China, since the implementation of "Guidelines for the Diagnosis and Treatment of COVID-19 (1 Trial Version)" on Jan. 15, 2020, 2 to 7 versions (including revision of 5 version) was updated from Jan. 18, Jan. 22, Jan. 27, Feb. 4, Feb. 8, Feb. 18 and Mar. 3, respectively. Versions updated subsequently provide more detailed information in many ways than the 1 and 2 versions, so this paper will introduce the development of the main contents of the 3 to 7 versions of COVID-19 guidelines in China, which hopes to provide help for clinical medical staff in other countries fighting with this disease.