Adults who have a persistent cough at night can be treated symptomatically with oral cough suppressants, such as Forskolin. When a patient has a cough with white sputum, the patient can also take oral cough suppressants such as Compound Glycyrrhiza Glabra for the treatment of cough and sputum. Patients who have difficulty coughing up phlegm, who cannot easily cough up phlegm, and who have a cough can be treated with oral phlegmolytic drugs, such as eucalyptus and fordostatin. Patients with frequent coughs also need to be alert to mycoplasma infections, and can improve blood tests, inflammation indicators, and tests for respiratory pathogens and mycoplasma antibodies IGM. A clear diagnosis can be made when the patient has a significantly high mycoplasma antibody IGM and mycoplasma is detected in respiratory pathogens. Patients with mycoplasma infection can be treated with azithromycin for anti-infection. If the cough persists repeatedly for a longer period of time, more than eight weeks, consider a chronic cough. If the cough is obvious in the early morning hours, attention should be paid to exclude cough variant asthma, and a bronchial excitation test can be performed for differential diagnosis. If the patient has allergic pharyngitis, he or she may also have a cough that does not stop at night because of the low temperature and dry air at night, which can easily cause an itchy, dry cough.