Bronchitis patients are not able to smoke, not only bronchitis patients, including all people are not recommended to smoke. This is because smoking can cause changes in the structure of the airway mucosa cells, damage to cilia, and cause damage to the respiratory system, cardiovascular system, digestive system, and even systemic organs. Because when cigarettes are burned, they can release a variety of toxic chemicals, including mainly tar, carbon monoxide, nicotine, irritating smoke and so on. Mainly on the respiratory system to cause certain harm, can make the airway mucus secretion increased, mucous membrane thickening, respiratory impairment, resulting in patients with emphysema, chronic bronchitis, chronic obstructive pulmonary, can also induce asthma, and even increase the incidence of lung cancer, laryngeal cancer, oral cancer, nasopharyngeal cancer. It can also cause certain harm to the cardiovascular system, which can cause the contraction of the coronary artery vessels, resulting in myocardial infarction, making the patient’s heart beat faster and leading to cardiovascular disease. For the digestive system can also cause chronic gastritis, gastric ulcers, can also cause tumors of the digestive tract. Smoking can also lead to premature fetal birth, underweight, increased miscarriage rate, etc. It is worth noting that smoking is not only harmful to your own health, but the second-hand smoke or third-hand smoke produced by smoking can also have an impact on the health of those around you.