The therapeutic drugs for allergic cough mainly include glucocorticosteroids, β2 agonists and antihistamines. 1. Glucocorticosteroids: with anti-inflammatory and immunosuppressive effects, they are relatively effective in clinical treatment. Commonly used drugs include beclomethasone, budesonide, fluticasone, ciclesonide and so on. 2. β2 agonists: they are often divided into short-acting and long-acting β2 agonists, which can relax the bronchial tubes and relieve symptoms such as cough. Commonly used short-acting β2 agonists are salbutamol and terbutaline, etc. Commonly used long-acting β2 agonists are salmeterol and formoterol, etc. However, long-acting β2 agonists can not be used alone, and are often used in conjunction with glucocorticoids. 3. Antihistamines: these drugs have the effect of anti-metamorphic reaction, which can inhibit the inflammatory reaction of the respiratory system and reduce the cough symptoms of patients. Such as levocetirizine, diclofenac tadalafil and so on. The use of the above drugs must be under the guidance of a professional doctor, standardized and reasonable use, if any obvious symptoms of discomfort, should go to the hospital in a timely manner.