Influenza is accompanied by recurrent fever symptoms and usually resolves in 7-14 days. Influenza is caused by influenza virus infection. Common symptoms include fever, general malaise, headache, sore throat, cough and sputum, etc. Severe patients will continue to have high fever, depression, vomiting and other symptoms. Mild to moderate influenza can be cured in about 7 days by taking symptomatic treatment. If the patient’s body temperature is lower than 38.5℃, physical cooling is usually sufficient. If the body temperature exceeds 38.5℃, antipyretic medication should be given, commonly used drugs include ibuprofen, paracetamol, etc. Severe influenza requires hospitalization and treatment such as antipyretic, antiviral, cough and phlegm relief, which can be cured in 7-10 days. In addition, flu patients should eat lightly, take rest, drink warm water, and keep indoor air circulation during treatment, and prevent cross-infection with others.