The main symptom of influenza is not nasal congestion, runny nose, influenza nasopharyngeal symptoms are mild, systemic toxic symptoms are more obvious, such as high fever, fatigue and so on. Influenza is an acute upper respiratory tract infection caused by influenza virus. It has a rapid onset, and clinical manifestations are characterized by high fever, headache, malaise, sore throat, ocular conjunctivitis and generalized muscular aches and pains, and other obvious symptoms of toxicity, while respiratory katastrophic symptoms are mild. Gastrointestinal type can be accompanied by diarrhea, vomiting and other gastrointestinal symptoms, pneumonia type is often manifested as pneumonia, toxicity can also be manifested as systemic toxic symptoms such as shock. Treatment of influenza should be under the guidance of a doctor: isolation of suspected and confirmed patients; symptomatic treatment, such as high fever, ibuprofen and other cooling; antiviral treatment, taking antiviral drugs such as oseltamivir for antiviral treatment. Influenza patients should also drink more water, mainly rest, ensure nutrition, conducive to the recovery of the body. It is recommended that patients actively go to the hospital for consultation, clear diagnosis, and use medication under the doctor’s instructions, do not take medication on your own, so as not to delay the condition.