Symptoms of influenza include respiratory, gastrointestinal and systemic, etc. The treatment is antiviral and symptomatic. The main symptoms of influenza are respiratory symptoms, including coughing up phlegm, chest tightness, etc., and in severe cases, coughing up blood sputum or pus sputum; followed by gastrointestinal symptoms, mainly abdominal pain, diarrhea, vomiting, etc.; and systemic symptoms, such as fatigue, muscle pain and drowsiness, etc. The treatment is antiviral treatment combined with symptomatic treatment. The treatment is antiviral therapy combined with symptomatic treatment. Since the underlying cause of influenza is influenza virus infection, therefore, antiviral therapy can be taken such as oseltamivir; secondly, for infected people with fever, acetaminophen can be used for antipyretic therapy; for those with more sputum, aminobromine can be combined with sputum treatment. The use of medication should be under the guidance of a physician, do not self-medicate. If you have similar symptoms, we recommend that you consult a doctor for a definitive diagnosis and treatment.