Soonerin is not a hormone, it is a leukotriene receptor antagonist, a western medicine. It can inhibit the contraction and spasm of airway, reduce the pathological state of airway congestion and edema, and improve the ventilation of airway, which can be mainly used in clinical practice for bronchial asthma, allergic rhinitis and wheezing bronchitis. It is mainly used for the prevention and long-term treatment of asthma in children over one week of age and adults, and can be used to reduce the symptoms caused by allergic rhinitis, including seasonal allergic rhinitis and perennial allergic rhinitis. In addition, the drug has relatively few side effects and is well tolerated by most patients, who usually do not need to discontinue treatment.