Bronchitis is not necessarily treated with antibiotics. The clinical treatment of bronchitis is mainly symptomatic, because bronchitis is an acute inflammation of the tracheobronchial mucosa caused by viruses, bacteria, or physical or chemical irritants or allergic factors. The main clinical manifestations are cough and sputum, and some patients may have fever, hemoptysis, or wheezing. Clinical treatment is mainly directed at the patient’s cough and sputum, and symptomatic anti-cough and phlegm medications are given. If the patient has evidence of bacterial infection or viral infection, antibiotics or antivirals may be used, but if not they are strictly contraindicated because irregular use of antibiotics can cause fungal infections in patients, resulting in increased rates of drug resistance, allergies or other adverse reactions. Other treatments for bronchitis include more rest, drinking more water, avoiding strain, and smokers must quit smoking and pay attention to airway protection, etc.