The causes of lung carbuncle include the feeling of external evil or phlegm-heat. The main manifestations are coughing and chest pain, coughing and vomiting foul-smelling pus and sputum, or pus and blood at the same time. Lung carbuncle is caused by the feeling of external evils, internal offense in the lungs, or phlegm heat, steam burn lungs, so that heat congestion and blood stasis, embedded into carbuncle, blood corruption and meat decay and pus. It can be divided into the early stage, carbuncle stage, pus stage and recovery stage. 1. Early stage: manifested as coughing, coughing up white sticky sputum, chest pain, accompanied by chills (fear of cold) and fever, dry mouth and nose, etc., treated with Yin Qiao San. 2. Carbuncle stage: manifested as body heat, sometimes vibration cold, followed by strong heat, coughing and spitting turbid sputum, yellowish green, with fishy odor, dry mouth and tongue, etc., with Qianjin Reed Stem Soup and Rujin Antidote San. 3. Pus stage: manifested as coughing up a lot of pus and spitting out phlegm, phlegm and blood together, abnormal odor, chest pain, body heat, face red, thirst, etc., use Jiawei Platycodonopsis Tang. 4. Recovery stage: manifested by reduction of body heat, coughing, pus and sputum, odor becomes light, etc. Use Sasanqua Lung Clearing Soup combined with Platycodonopsis Almond Decoction. If suffering from carbuncle, consult the clinician and follow the doctor’s prescription.