There are many causes of yellow sputum in coughs, such as yellow sputum caused by lung-heat cough in traditional Chinese medicine, in which the tongue coating appears thin and yellow; yellow sputum is also caused by bronchitis and pneumonia, and when infected with bacteria, the sputum becomes sticky and more sputum is produced; yellow sputum also occurs in coughs caused by lung dryness, which usually has less sputum, a hoarse voice, a sore throat and constipation, and repeated coughs with yellow sputum. It is recommended to go to the hospital to improve the CT of the chest or CT of the nasopharynx and other related examinations to diagnose the cause of yellow sputum and then treat it symptomatically. At the same time, keep the air in the living room fresh, avoid smoking and alcohol, and avoid stimulation by physical and chemical factors such as smoke, dust, odor and oil smoke. Prevent colds and strengthen exercise. During the remission period, we should pay attention to the combination of work and rest, and exercise appropriately, mainly to enhance physical fitness.