Coughing with phlegm in the morning, this situation is mainly considered that there is a large amount of inflammatory secretion in the airway during the night, which accumulates and is coughed up in the morning. Since the sympathetic nerves of people at night are more excited than during the day, it is easy to make the glands in the airway to secrete vigorously, and the inflammatory secretion in the airway will increase. Clinically more common is the inflammatory response of the airway, including infectious factors, there are viruses, bacteria, mycoplasma, chlamydia, rickettsia and other pathogens caused by bronchitis, pneumonia and so on. It also includes non-infectious factors, with bronchial asthma, wheezing bronchitis, and cough variant asthma, when large amounts of inflammatory secretions are also present in the airways. Clinical treatment options are available, such as oral aminoglutethimide syrup, carbocysteine oral solution, and brown colloid. Nebulized inhalation is also available, choosing budesonide nebulized solution combined with chymotrypsin to achieve the effect of diluting and removing sputum. Antibiotics such as penicillin, amoxicillin, and clindamycin should be given for bacterial infections.