Bronchitis is a common clinical respiratory disease, which is often caused by infection of the respiratory tract caused by bacteria or viruses. Smoking is also a common cause of bronchitis because it increases the chances of infection due to increased mucous secretions in the bronchial tubes; weather factors are an important factor in the development of the disease. Poor nutrition will make the immune system decline, can not effectively resist the invasion of microorganisms, bacteria, viruses will cause the onset of the disease; allergy is also an important factor, allergic people are prone to the occurrence of the disease. In life, patients should do a good job of disease prevention, reasonable diet, regular work and rest, and develop a good lifestyle habits. Quit smoking is an important step to promote the recovery of bronchitis, exercise properly, improve their immunity, keep warm, wear a mask when the weather is cold, avoid the inhalation of cold air to stimulate the respiratory tract, at home or at work, be sure to open the windows to allow air circulation. Therefore, you must do a good job in life to prevent bronchitis, to achieve early detection and early treatment, and pay close attention to the changes in the body to prevent the occurrence of the disease.