A cough with green sputum indicates an aggravation of the disease, indicating the occurrence of Pseudomonas aeruginosa infection, which should be treated promptly to avoid further aggravation. Cough with green sputum indicates a respiratory tract infection, which mostly requires antibiotics for anti-inflammatory treatment. If Pseudomonas aeruginosa infection is clearly present, anti-inflammatory treatment may require high-grade antibiotics such as Sulphen and Mepin. In addition, a combination of cough expectorant drugs is needed. If accompanied by severe fever, antipyretic medications such as ibuprofen suspension or acetaminophen should also be used. Respiratory tract infections are caused by respiratory inhalation of viruses and bacteria, so you should avoid going to places with high traffic in general, and you should avoid doing outdoor activities on hazy days. Because the dust particles in the haze, it is easy to carry germs directly into the human respiratory tract and cause respiratory diseases, but also to stay away from people who are already infected with respiratory diseases. During the illness, you can eat more protein-rich foods, such as eggs and fish. You should also pay attention to the cleanliness of your mouth, brush your teeth in the morning and evening, and rinse your mouth with water after meals to prevent throat infections. The room should be frequently opened and ventilated, bed sheets and bedding should be washed and dried regularly, and avoid smoking and drinking.