Aster herb is often used to moisten the lungs and lower the qi (nourish the lungs and make the upward lung qi descend), eliminate phlegm and relieve cough, etc. It has a therapeutic effect on symptoms such as phlegm and asthma, coughing up blood through labor and coughing up blood, and a new and prolonged cough. Aster is the dried root and rhizome of Asteraceae plant, its flavor is bitter, pungent, warm, and belongs to the lung meridian. Usually moisturize the lungs and lower the qi, eliminate phlegm cough and other effects, generally for phlegm cough, coughing up blood, coughing for a long time and other symptoms have a therapeutic effect. It should be taken with caution in cases of dry cough due to deficiency of yin, and its adverse effects are not known at the moment. If you need to take the above herbs, it is recommended to take them under the guidance of a professional Chinese medicine practitioner to avoid taking them privately and causing discomfort.