Influenza virus colds, or influenza, commonly known as flu, usually heal in 7 to 14 days, but the treatment cycle needs to be extended if the patient develops complications or is elderly and frail. Influenza virus infection is a contagious disease triggered by the invasion of influenza viruses of the nail type, type B, type C, etc. into the human body. Common symptoms include chills, high fever, headache, fatigue, nasal congestion, dry cough and sore throat. Usually, influenza virus colds are self-limiting and can be cured in 7-14 days with a good prognosis. However, some patients, especially infants and young children, the elderly, and those with chronic underlying diseases may develop complications such as pneumonia and encephalitis, then the treatment cycle will be prolonged, and even life-threatening. Once an influenza virus cold occurs, it is necessary to pay attention to rest, strengthen nutrition, and those with severe symptoms need to be given supportive symptomatic treatment and antiviral therapy to minimize the duration of the disease and avoid complications.