Prolonged cough should immediately seek medical attention to identify the cause of the disease and treat the cause, it is not recommended to take rock cabbage on their own. Long-term cough for a long time is generally seen in the internal injury cough. 1. phlegm and dampness in the lungs: repeated coughing, coughing and coughing, coughing due to phlegm, phlegm out of the cough slow, phlegm more white, sticky or thick into a block, every morning or after eating coughing phlegm, chest tightness and epigastric plumpness. Treatment should be drying dampness and resolving phlegm (to remove phlegm in the body with drying dampness drugs), regulating qi and relieving cough. The formula is Er Chen Ping Stomach San combined with San Zi Nourishing Family Soup. 2. Phlegm-heat and lung congestion: coughing with thick air, phlegm sound can be heard in the throat, phlegm is yellowish and thick or sticky, coughing and vomiting are not refreshing, or there is a hot and fishy smell, or there is blood, chest and ribs are full of distension, and pain is induced when coughing. Treatment should clear away heat and resolve phlegm, purge the lungs and stop 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 ribs, dry throat and bitter mouth, often feeling that phlegm stagnation in the throat and coughing is difficult to cough out, the amount of small viscous. Treatment should clear the lungs and diarrhea the liver, dissolve phlegm and stop coughing. The formula is Scutellaria baicalensis and Dai Clam San. 4. Deficiency of lung yin (insufficient yin in the lungs): dry cough, short cough, sputum with little sticky white sputum, or sputum with blood, or gradually hoarse voice, dry mouth and throat, afternoon hot flashes (a burst of fever). Treatment should nourish Yin and clear away heat (nourish Yin fluid and remove heat), moisten the lung and stop coughing. The formula is Sha Shen Mai Dong Tang. The medication should be taken under the guidance of a professional physician, and should not be taken on one’s own, so as not to cause delay in the condition.