If there is spitting of yellow sputum, it is usually caused by heat in the lungs, and then a detailed diagnosis is needed to clarify the diagnosis. When the lungs are attacked by heat, it will be manifested as lung heat, which often produces yellow sputum that is sticky and thick, and the patient will have other symptoms such as accelerated respiration and facial redness, etc. At this time, cold and cool Chinese medicines such as Baibei, Scutellariae, Chrysanthemum, and Pei Pa Koa, etc., need to be used to clear the heat from the lungs. When the lungs are cold, the symptoms are opposite to those of Lung Heat, with thin white sputum, headache, nasal congestion, and fear of cold, as well as a runny nose. Warming medicines such as ephedra, perilla, and almonds are needed to treat this condition. If the patient is not feeling well, it is recommended to consult a doctor in time, and it is not advisable to use medication by oneself to avoid delaying the condition.