Ambroxol is mainly used for cough, thick sputum, poor expectoration, shortness of breath and wheezing caused by various acute and chronic respiratory diseases, such as acute chronic trachea-bronchitis, asthma, chronic obstructive pulmonary disease and other causes of the above symptoms. Ambroterol is a compound preparation, which is composed of ambroxol and clenbuterol, and is a prescription drug, the use of which needs to be under the supervision of a physician. Ambroterol may have tremor, hand tremor, drowsiness, dizziness, panic, elevated blood pressure, rash, nausea, vomiting and other adverse reactions, which can be relieved by discontinuing the drug under normal circumstances. Hypertrophic cardiomyopathy, patients who are allergic to Ambroterol absolutely can not be applied; hyperthyroidism, hypertension, diabetes mellitus, heart disease patients, patients with severe renal insufficiency need to be judged by a physician according to the specific circumstances can be used.