1. Meet the diagnostic criteria for COVID-19 Suspected cases: Epidemiological history: Travel history or residence history in Wuhan and surrounding areas or other communities with case reports within 14 days before the onset of illness, Have a history of contact with SARS-CoV-2(i.e. novel coronavirus 2019) infected persons (positive nucleic acid test) within 14 days before onset, Patients with fever or respiratory symptoms from Wuhan and surrounding areas or from communities with case reports within 14 days before the onset of illness, Cluster onset (within 2 weeks in a small area such as home, office, school class, etc., 2 or more cases of fever and / or respiratory symptoms occurred. Clinical manifestations: Fever and / or respiratory symptoms, The imaging features of the COVID-19, The total number of white blood cells is normal or decreased in the early stage of onset, and the lymphocyte count is normal or decreased, Have any one of the epidemiological history and meet any two of the clinical manifestations. If there is no clear epidemiological history, it meets 3 of the clinical manifestations. Confirmed cases: Suspected cases have one of the following etiology or serological evidence: Real-time fluorescent RT-PCR detection of new coronavirus nucleic acid positive, Viral gene sequencing, highly homologous to known new coronaviruses, Serum ARS-oV-2-specific IgM antibodies and IgG antibodies were positive, serum nSARS-CoV-2-specific IgG antibodies changed from negative to positive or the recovery period was 4 times or more higher than in the acute phase, 2. Patients within 7 days of onset, or patients without clinical symptoms but confirmed within 7 days, 3. Patients who are over 18 years of age and have normal autonomous judgment ability are not limited to men and women, 4. Patients who volunteered to participate in the trial and signed informed consent.

1. Meet the diagnostic criteria for COVID-19 Suspected cases: Epidemiological history: Travel history or residence history in Wuhan and surrounding areas or other communities with case reports within 14 days before the onset of illness, Have a history of contact with SARS-CoV-2(i.e. novel coronavirus 2019) infected persons (positive nucleic acid test) within 14 days before onset, Patients with fever or respiratory symptoms from Wuhan and surrounding areas or from communities with case reports within 14 days before the onset of illness, Cluster onset (within 2 weeks in a small area such as home, office, school class, etc., 2 or more cases of fever and / or respiratory symptoms occurred. Clinical manifestations: Fever and / or respiratory symptoms, The imaging features of the COVID-19, The total number of white blood cells is normal or decreased in the early stage of onset, and the lymphocyte count is normal or decreased, Have any one of the epidemiological history and meet any two of the clinical manifestations. If there is no clear epidemiological history, it meets 3 of the clinical manifestations. Confirmed cases: Suspected cases have one of the following etiology or serological evidence: Real-time fluorescent RT-PCR detection of new coronavirus nucleic acid positive, Viral gene sequencing, highly homologous to known new coronaviruses, Serum ARS-oV-2-specific IgM antibodies and IgG antibodies were positive, serum nSARS-CoV-2-specific IgG antibodies changed from negative to positive or the recovery period was 4 times or more higher than in the acute phase, 2. Patients within 7 days of onset, or patients without clinical symptoms but confirmed within 7 days, 3. Patients who are over 18 years of age and have normal autonomous judgment ability are not limited to men and women, 4. Patients who volunteered to participate in the trial and signed informed consent.