Allergic cough (AC), also known as allergic cough, has chronic cough as its main clinical manifestation and is characterized by recurrent episodes that are difficult to recover from. The manifestations of allergic cough: (1) cough lasting >4 weeks, with an irritating dry cough and little sputum; (2) most of the people affected are children and allergic people; (3) the cough usually attacks or worsens in the early morning or in the middle of the night, with milder attacks during the day and heavier attacks at night, especially after going to sleep, and often appears violent; (4) the cough worsens after contact with allergens (pollen, animal fur, dust mites, etc.) or after inhaling irritating gases such as cold air or oil fumes; (5) the cough is accompanied by shortness of breath. (5) cough is characterized by shortness of breath, but there are no symptoms of cold and fever during the illness; (6) general chest X-ray and laboratory tests are mostly unremarkable, with normal pulmonary ventilation function and negative bronchial excitation test; (7) history of other allergic diseases, positive allergen skin test and increased IgE value in serum chemistry; (8) cough is ineffective with anti-inflammatory and cough suppressant treatment, and diagnostic treatment with anti-asthmatic drugs is effective. Causes of allergic cough pathogenesis: These include two main aspects, the patient’s own allergic constitution and external environmental factors. Cold air, changes in air humidity, high or low air pressure, and environmental allergens (fungi, dust mites, pollen) can trigger an allergic cough attack. Although allergic cough is usually not life-threatening, it can seriously affect sleep, work and school, so it should be diagnosed early and treated aggressively.