Allergic cough, which only relieves the symptoms but cannot be cured. Allergic cough is a kind of cough induced by contact with allergic substances. Patients are usually allergic to pollen, dust, dust mites, mold, animal fur, food, and also can be induced by contact with air pollution and harmful gases, such as paint, benzene, formaldehyde and so on. Allergic cough can only be cured if the allergy is completely corrected. However, as allergies are generally difficult to eradicate, a specific constitution is formed on the basis of congenital heredity, and exposure to allergens can easily lead to reallergy. Although it is not possible to completely eradicate allergic cough, it is possible to reduce the chances of developing it by identifying the allergens and reducing contact with them. First of all, allergen testing should be performed to identify the allergens as early as possible, and after the allergens are identified, it is necessary to avoid contact with the allergens as much as possible in order to prevent allergies from occurring. For patients who have already developed allergic cough, timely drug treatment should be carried out, such as antihistamines, such as loratadine, cetirizine, chlorpheniramine maleate and so on. For patients with allergies, it is recommended to seek prompt medical attention and follow the doctor’s instructions to avoid self-medication.