Morning cough with green phlegm is often caused by inflammatory phlegm and muscle atrophy that is not expelled from the lungs. In this case, you should use more phlegm-cleansing drugs or do nebulization and humidification of the mouth and airways, drink more water, and let it out as soon as possible without coughing violently. If the phlegm is expelled, the disease will be cured, but if it is not expelled and remains in the lungs, there may be several fixed lesions in the future, which will cause continuous damage to the body. Generally, if you can get up in the morning and get rid of it, the disease is still relatively superficial. There is a specific disease called bronchiectasis, which also often expels green sputum, but this disease is deeper, and often the patient cannot get up in the morning, but has to wait until noon or afternoon for the sputum to come up slowly. When there is green phlegm in the morning, we should seize this time, because the disease is not very deep, and help it to discharge the phlegm quickly, so that the organism can fully recover its health.