News about plasma donation from cured patients has appeared in the media: after being discharged from hospitals in Chongqing and Guangdong, patients with novel coronavirus pneumonia voluntarily donated plasma for clinical treatment and research. The National Health and Wellness Commission issued the “Treatment Plan for Pneumonia with Novel Coronavirus Infection (Trial Version 5)”, which also mentions that “recovery plasma therapy can be used” for the treatment of severe and critical cases. However, plasma therapy is mostly used in patients with severe and critical illnesses, and these patients are often treated with a combination of drugs, so it is difficult to distinguish whether plasma therapy plays a decisive role, and it is difficult to make definite conclusions about its efficacy.