Influenza A infusion can be good for about 7~14 days, but the recovery time is different for each person with different severity of illness and different choice of treatment, and the treatment time will be prolonged if it causes complications. Influenza A can cause fever, headache, runny nose, nasal congestion and other adverse symptoms, the more serious patients need intravenous infusion treatment, about 7~14 days can be good. However, there are large individual differences, and the more severe the illness, the longer the treatment time. Severe influenza A patients, if the treatment is not timely, may cause some complications, such as pneumonia, neurological damage, infectious toxic shock, etc., the difficulty of treatment and treatment time will also be extended. After diagnosis of Influenza A, you should actively cooperate with your doctor for treatment in order to promote the recovery of the disease and reduce the harm to your body.