There are many types of cough syrups used by adults in clinic, such as Chuanbei loquat paste, Sydney cough syrup, Apricot Sue cough syrup and so on. 1. Pei Pa Koa can clear away heat, dispel phlegm and suppress cough. It contains loquat leaves, orange stem, Sichuan pei, mint and other traditional Chinese medicines. Commonly used in wind-heat attacking the lungs, phlegm-heat congestion of the lungs due to cough with phlegm, phlegm yellow, sore throat and bronchitis with the above manifestations. People with pulmonary heart disease, asthma attack and fever over 38.5℃ should seek medical advice. Adverse reactions and contraindications are not clear. 2. Syrup of Sydney Cough has the efficacy of moistening the lungs, eliminating dryness, expelling phlegm and relieving cough. It is composed of Pre-tuberculosis, Platycodon grandiflorus, bitter almonds (fried), aster (roasted), loquat leaves, Hedera japonica, pear clear cream. Commonly used in bronchitis or cough and phlegm. Avoid cold and raw food during the period of taking the medicine, and be cautious of children and the weak. Adverse reactions, contraindications are not clear. 3. Apricot Su cough syrup has the effect of dispersing cold, cough and lung promotion. It is composed of prehuji, platycodon, licorice, bitter almonds, pericarpium, fried perilla leaves. It is suitable for coughing due to wind-cold offense to the lungs, shortness of breath, sputum thin white, nasal congestion and runny nose. Avoid spicy and other foods during the period of taking the medicine, and patients with pulmonary tuberculosis should consult a doctor promptly. Children, pregnant women should be used with caution. Adverse reactions, contraindications are not clear. The use of drugs should be under the guidance of a doctor.