(1) Aged 18 to 90 years old, male or female, (2) Patients with a definite diagnosis of new type of coronavirus pneumonia, (3) Expected survival time > 10 days, (4) Serology: HIV antibody negative, hepatitis B surface antigen, e antigen negative, hepatitis C antibody negative, female patients with negative pregnancy test, ALT, AST <=2.5 ULN, for patients with liver metastases, ALT, AST <=5 ULN, ALP <=2.5 ULN, serum urea nitrogen and creatinine <=1.5 ULN, serum total bilirubin <1.5 times the upper limit of normal, (6) Patients or their legal representatives can understand and voluntarily sign informed consent.

(1) Aged 18 to 90 years old, male or female, (2) Patients with a definite diagnosis of new type of coronavirus pneumonia, (3) Expected survival time > 10 days, (4) Serology: HIV antibody negative, hepatitis B surface antigen, e antigen negative, hepatitis C antibody negative, female patients with negative pregnancy test, ALT, AST <=2.5 ULN, for patients with liver metastases, ALT, AST <=5 ULN, ALP <=2.5 ULN, serum urea nitrogen and creatinine <=1.5 ULN, serum total bilirubin <1.5 times the upper limit of normal, (6) Patients or their legal representatives can understand and voluntarily sign informed consent.