According to its symptoms, bronchitis is generally categorized as “cough”. Due to its long and recurrent course, it is mostly an internal cough, which can be treated with Er Chen Ping Stomach San, San Zi Nourishing Family Soup, Qing Jin Hua Phlegm Soup, and so on. 1. Phlegm-dampness embedded in the lungs: recurrent coughing, coughing with a heavy sound, coughing because of phlegm, coughing slowly when phlegm comes out, phlegm is white, sticky or thick and lumpy, coughing and phlegm is very much in the morning or after eating, chest tightness and epigastric plumpness. The formula is Er Chen Ping Stomach San combined with San Zi Nourishing Family Soup. 2. Phlegm-heat congestion of the lungs: cough with thick air, phlegm sound in the throat, yellowish or thick phlegm, unpleasant coughing and vomiting, hot and fishy odor, or blood, distension and fullness in the chest and ribs, and pain when coughing. The formula is Qing Jin Hua Phlegm Tang. 3. Liver fire offending the lungs: coughing in the upper air, red face and eyes when coughing, leading to pain in the chest and hypochondrium, dryness of the throat and bitterness in the mouth, coughing up phlegm that is difficult to cough up, with a small amount of phlegm or phlegm that is as mucous as a flocculent streak, and the symptoms may increase or decrease according to emotional fluctuations. The formula is Scutellaria baicalensis and Dai Clam San. 4. Deficiency of lung yin (insufficiency of yin in the lungs): dry cough, short cough, phlegm with little sticky white sputum, or blood in the sputum, or gradually hoarse voice, dry mouth and throat, afternoon hot flashes, zygomatic redness (reddening of the cheeks and zygomatic bones), night sweating (abnormal sweating after going to sleep and stopping sweating after waking up). The formula is Sha Shen Mai Dong Tang. If patients need medication, they should choose it under the guidance of a doctor and should not use it without authorization.