1. have received chest radiotherapy before 2. bacteria, fungi and other infections other than novel coronavirus infection; 3. combined with severe primary diseases such as cardiovascular, cerebrovascular, liver, kidney, hematopoietic and endocrine system or immune system diseases (the upper limit of liver function alt and ast\> normal reference value, the upper limit of scr\> normal reference value, poor blood glucose control); 4. mental retardation, mental disorders; 5. planned pregnancy, pregnancy, lactation women and during the trial; 6. allergy constitution or allergy to the drug ingredients and excipients of this test; 7. participated in other clinical trials in the recent 1 month; 8. the investigator does not considered appropriate to participate in this clinical trial.

1. have received chest radiotherapy before 2. bacteria, fungi and other infections other than novel coronavirus infection; 3. combined with severe primary diseases such as cardiovascular, cerebrovascular, liver, kidney, hematopoietic and endocrine system or immune system diseases (the upper limit of liver function alt and ast\> normal reference value, the upper limit of scr\> normal reference value, poor blood glucose control); 4. mental retardation, mental disorders; 5. planned pregnancy, pregnancy, lactation women and during the trial; 6. allergy constitution or allergy to the drug ingredients and excipients of this test; 7. participated in other clinical trials in the recent 1 month; 8. the investigator does not considered appropriate to participate in this clinical trial.

have received chest radiotherapy before bacteria, fungi and other infections other than novel coronavirus infection; combined with severe primary diseases such as cardiovascular, cerebrovascular, liver, kidney, hematopoietic and endocrine system or immune system diseases (the upper limit of liver function alt and ast> normal reference value, the upper limit of scr> normal reference value, poor blood glucose control); mental retardation, mental disorders; planned pregnancy, pregnancy, lactation women and during the trial; allergy constitution or allergy to the drug ingredients and excipients of this test; participated in other clinical trials in the recent 1 month; the investigator does not considered appropriate to participate in this clinical trial.

have received chest radiotherapy before bacteria, fungi and other infections other than novel coronavirus infection; combined with severe primary diseases such as cardiovascular, cerebrovascular, liver, kidney, hematopoietic and endocrine system or immune system diseases (the upper limit of liver function alt and ast> normal reference value, the upper limit of scr> normal reference value, poor blood glucose control); mental retardation, mental disorders; planned pregnancy, pregnancy, lactation women and during the trial; allergy constitution or allergy to the drug ingredients and excipients of this test; participated in other clinical trials in the recent 1 month; the investigator does not considered appropriate to participate in this clinical trial.