The difference between influenza and common cold is mainly the different clinical symptoms, different pathogenic bacteria, different onset time and different treatment. 1. Different clinical symptoms (1) Common cold: clinical symptoms are usually mild, without fever or low fever. The main manifestations include runny nose, sneezing, nasal congestion, pharyngeal discomfort, hoarseness, coughing, coughing up phlegm, and so on. (2) Influenza: manifestation of muscle aches, poor mental status, runny nose, nasal congestion, sneezing, watery eyes, high fever, weakness of limbs, cough, cough phlegm, headache and other symptoms. 2.Pathogenic bacteria (1) Common cold: caused by respiratory syncytial virus, parainfluenza virus, rhinovirus and other infections. (2) Influenza: caused by influenza A or B virus infection. Season of Incidence (1)Common cold: can occur throughout the year. (2)Influenza: There is a difference in the season of onset between the north and the south, with November-February being the season in the north and November-February and June-August being the season in the south. 4. Different treatment modes (1) common cold: generally through rest, drink water, strengthen nutrition can be self-healing; such as symptoms are serious, to symptomatic treatment, such as sneezing, runny nose can be used to reduce nasal congestion with cold medicine compound aminophenol alkylamine capsule, etc., to alleviate the symptoms. (2) Influenza: need to use oseltamivir and other drugs to inhibit the influenza virus. The above is the difference between the flu and the common cold, the flu should be treated in the hospital as soon as possible in accordance with medical advice.