Chronic coughs, such as chronic or subacute coughs, caused by PIC, such as post-infectious coughs, have a certain degree of self-healing. However, other coughs do not tend to heal on their own, especially infectious coughs, such as those caused by bronchitis, which should be seen in a timely manner. If the problem is not solved and the state of the airway is not reversed, then the airway remodeling caused by the substance in the future will turn into some refractory or more severe asthma, which is very troublesome. If not treated, it is rare that the cough is cured by itself. It is also important to note that for heavy and prolonged coughs, the cause must be found and then treated with a combination of Chinese and Western medicine.