Various respiratory diseases such as bronchitis, chronic asthmatic bronchitis, bronchial asthma, bronchiectasis, pneumonia, emphysema, cor pulmonale, pulmonary fibrosis, pneumoconiosis and silicosis, as well as cough, excessive phlegm, chest tightness and shortness of breath caused by the above diseases. It also has adjuvant therapeutic effect on tuberculosis, pneumonia and lung cancer.