Etanercept is very effective for treating cough with phlegm and has a sweet taste that is easily accepted by children, making it especially suitable for children. It is also called Aminebutrol Oral Solution, which is a compound preparation composed of Aminebutrol Hydrochloride and Clenbuterol Hydrochloride. Ambroxol hydrochloride is a mucolytic agent, which can increase the secretion of plasma glands of respiratory mucosa, reduce the secretion of mucus glands and decrease the viscosity of mucus, which can promote the secretion of lung surface active substances and increase the ciliary movement of bronchi, so that sputum can be coughed out easily. Clenbuterol hydrochloride is a selective beta agonist, which has the effects of relaxing bronchial smooth muscle, enhancing cilia movement, dissolving mucus and promoting sputum excretion, and is particularly effective for treating cough with sputum.