Coughing up yellow-green sputum usually does not heal on its own and requires treatment with sensitive antibiotics to make the condition better. Yellow-green sputum is common in diseases such as bronchitis, pneumonia, lung abscess and bronchiectasis, which may be accompanied by coughing and coughing up sputum. If patients with these diseases are combined with Pseudomonas aeruginosa infections, the sputum will have a yellowish-green color. Patients can go to the respiratory department of the hospital and have relevant examinations, such as chest X-ray and chest CT, and sputum culture to confirm whether the infection is caused by P. aeruginosa. According to the results of sputum culture, appropriate antibiotics can be selected for treatment. At the same time, patients can combine with nebulizer inhalation treatment to help expel sputum, promote the inflammation of lung tissue to subside, and improve the symptoms of cough and sputum. During the period of coughing sputum, it is necessary to take regular rest and rest, exercise appropriately, protect the heart and lung function, eat a comprehensive and nutritious diet, and consume less sweet and greasy food.