The drugs of choice for relieving tracheospasm are mainly bronchodilators and anticholinergic drugs, of which bronchodilators are divided into long-acting and short-acting ones. Short-acting bronchodilators include salbutamol and terbutaline, both of which can significantly relieve airway spasm, while long-acting β2 agonists include salmeterol and formoterol, which are generally used during the remission period. Anticholinergic drugs can also play a role in diastolic bronchus, and there are also short-acting and long-acting ones. Short-acting ones include ipratropium bromide and long-acting ones include tiotropium bromide, which can relieve tracheospasm.