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 (1st Trial Version)" on Jan. 15, 2020, 2nd to 7th versions (including revision of 5th 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 1st and 2nd versions, so this paper will introduce the development of the main contents of the 3rd to 7th versions of COVID-19 guidelines in China, which hopes to provide help for clinical medical staff in other countries fighting with this disease.