There are many causes of coughing. Cold is only one of the causes of coughing, and it is easily caused when there are diseases such as bronchitis, pneumonia, tuberculosis, lung abscess, allergic rhinitis, bronchial asthma, etc. Tumors and other occupying lesions in the lungs can also cause coughing. It is necessary to go to the hospital for appropriate tests according to other accompanying symptoms and to actively treat them after a clear diagnosis. The most common cause is bronchitis, which requires active treatment with antibacterial and anti-inflammatory medications, as well as symptomatic treatment with cough suppressants and other medications. It may also be caused by cough variant asthma, which needs to be treated with bronchodilator drugs.