First, 60 patients who are eligible to enter the study (patients who have recovered from the disease of covid-19, but their symptoms are still more than usual, after three weeks of the onset of symptoms of covid-19, have symptoms such as fatigue, sleep disorders, loss of sense of taste and smell, chest pain, cough, joint pain, hair loss, skin rashes, etc.) are at the time of admission background information including sex, age, clinical and drug records, disease manifestations and laboratory findings as well as symptoms Vitality and severity of the disease, history of hospitalization and receiving corticosteroids will be collected from the patients and recorded in the study checklist. Then for the patients of the treatment group (30 people) who will be randomly selected.