Procaterol tablets are a kind of β2 adrenergic receptor agonist, mainly exerting the effect of diastole bronchial smooth muscle, and also have some anti-allergic effect and promote the respiratory cilia movement. Therefore, it is mainly used in patients with bronchial asthma, wheezing bronchitis, acute bronchitis with increased bronchial reactivity, and chronic obstructive pulmonary disease. However, patients who are allergic to this drug are prohibited, and patients with high blood pressure, heart disease, and diabetes need to be used with caution. Therefore, when applying this drug, patients are advised to consult a hospital before applying it.