Long-term morning cough may be caused by chronic bronchitis, lung cancer, cough variant asthma and so on. 1. Chronic bronchitis: mostly seen in elderly male smoking patients, mainly manifested as chronic cough, wheezing and other symptoms. Chronic bronchitis patients’ cough is aggravated when they wake up in the morning. 2. Lung cancer: Lung cancer patients may also show long-term morning cough, accompanied by chest pain, hemoptysis, chest tightness and other symptoms, chest CT examination can help screening. 3. Cough variant asthma: Cough variant asthma mostly occurs in the morning, and cough can be the only manifestation, and bronchial provocation test and bronchodilator test can help differential diagnosis. Prolonged morning cough has many causes, it is recommended to go to a regular hospital, under the guidance of the doctor, improve the relevant examination, clear causes, avoid blindly use their own medication.