Influenza, also known as the flu, is characterized by more severe systemic symptoms such as high fever and headache, while respiratory symptoms are usually milder, and patients are advised to seek timely medical attention. Influenza is an acute respiratory infectious disease caused by influenza virus. It usually starts sharply, and patients may have more serious systemic symptoms, such as high fever, chills, chills, headache, fatigue, generalized body aches and pains, etc., whereas respiratory symptoms, such as cough, runny nose, sneezing, nasal congestion, etc., are usually milder. The main treatment for influenza is medication, commonly used drugs such as oseltamivir, zanamivir and other antiviral drugs. Patients should take the medication according to the doctor’s instructions, and generally after timely and effective antiviral treatment, patients can get a better prognosis. If the patient has the above symptoms and suspects the presence of influenza, he/she should consult a doctor in time and complete the relevant examinations under the doctor’s guidance, such as blood routine, viral nucleic acid test, virus isolation culture, etc., so as to make a clear diagnosis of the disease and carry out the corresponding treatment according to the doctor’s instructions.