It has a bitter taste and is warm in nature, and belongs to the lung meridian, with the effect of moistening the lung and relieving cough, subduing Qi and eliminating phlegm. It can also be used in combination with other drugs to treat cough, coughing phlegm, shortness of breath and chest tightness caused by external wind and cold, as well as cough, coughing blood and weakness caused by deficiency of the lung, and treatment of laryngeal paralysis and urinary discomfort. For example, when treating cough, it can be used in combination with mulberry bark, maitake, almond and other drugs. It should be noted that it is recommended to consult with the TCM department of a regular hospital and use this medicine under the guidance of a regular TCM doctor to avoid blind self-medication and adverse reactions. Pay attention to avoid eating spicy and irritating foods such as chili, ginger and garlic during the medication period, otherwise the efficacy of the drug may be affected. If adverse reactions such as nausea, vomiting and itching of the skin occur after taking the drug, go to a regular hospital promptly.