Aster has the efficacy of moistening the lungs and lowering the qi (moisturizing the lungs and making the upward lung qi descend), eliminating phlegm and relieving cough; it can be used to treat phlegm and wheezing cough, etc.; it can be consumed as an infusion or a decoction of water in soup. Aster is pungent, bitter, warm and belongs to the lung meridian. This medicine can be used clinically to treat diseases such as phlegm and cough, new and prolonged cough, laborious cough and hemoptysis, and can also be used to treat various causes of coughing and gas reversal, sputum and other diseases. If wind-cold offends the lungs, coughing and throat itching, coughing and sputum unpleasant, with Jingwu, Platycodonopsis, etc., such as stopping cough powder; if used to treat yin deficiency labor cough, sputum with blood, with Agaricus and Bei Mu, etc.. The adverse effects of taking Aster are not clear, note that people with solid heat in the body should be cautious. Patients need to take under the guidance of a professional doctor.