The recurrence of bronchitis should be analyzed on a case-by-case basis. For the recurrence of acute bronchitis, three situations should be considered: First, the diagnosis of bronchitis is wrong is similar symptoms caused by other diseases, such as asthma, pneumonia, etc. Second, the treatment course is not enough, resulting in recurrence of the disease. The time is too short for bacteria to multiply in the body, which can continue to lead to the onset of symptoms. 3, the emergence of other complications, such as complications of spontaneous pneumothorax, leading to recurrent and aggravated conditions. Therefore, it is important to identify the cause of recurrent bronchitis and take targeted treatment in a timely manner.