Google translated abstract. -To evaluate the efficacy and safety of hydroxychloroquine sulfate in the treatment of patients with common coronavirus disease (COVID-19) in 2019. Methods: Thirty confirmed COVID-19 patients who were hospitalized in Shanghai Public Health Clinical Center from February 6 to 25, 2020 were collected. Patients were randomly assigned 1: 1 to the experimental and control groups. The control group received conventional treatment, and the test group received oral chlorochloroquine sulfate (400 mg, 1 time / d for 5 days) on the basis of conventional treatment.