Many viruses can cause bronchitis, and common clinical viruses include rhinovirus, respiratory syncytial virus, adenovirus, as well as influenza virus and parainfluenza virus, etc. The common manifestation of bronchitis caused by these viruses is coughing and coughing, accompanied by wheezing, shortness of breath, chest tightness, and shortness of breath. If the inflammation is severe, there may be a persistent increase in temperature or even a persistent high fever, and the cough is usually clear or white sputum. If the symptoms are severe, cardiac insufficiency and heart failure may cause palpitations, and the above symptoms are even more serious. In addition to antiviral treatment and symptomatic treatment, attention should be paid to keep the vital signs stable to prevent toxic shock.