Cough is usually associated with respiratory diseases, such as bronchitis, allergic cough, asthma and other diseases, and can be combined with the cause of the disease, such as general treatment and medication. 1. Bronchitis: This disease is caused by infection with microorganisms or physical and chemical stimuli. If the dry cough is severe, dextromethorphan can be taken orally to calm the cough; if the cough is phlegmatic, Ambroxol can be used to reduce phlegm. If combined with bacterial infection, antibiotics should be used as soon as possible, such as cefixime, amoxicillin and so on. 2. Allergic cough: usually associated with contact with allergens, such as pollen, mites, etc., if you do not keep away from the causative factors in a timely manner, it is easy to cause irritating cough, inducing inflammatory reaction of the airway. The first treatment is to keep away from allergens, and the second can use anti-allergy drugs, such as loratadine, cetirizine and other drugs. 3. Asthma: It is a heterogeneous disease of airway hyperresponsiveness, which can have symptoms such as wheezing, coughing and chest tightness. Most patients inhale small doses of glucocorticoids plus beta agonists such as budesonide formoterol powder inhaler to control the condition. If symptoms are not relieved, oral glucocorticoids such as prednisone may be given. Prolonged coughing can also be caused by other diseases, such as nasal disease, gastroesophageal reflux disease, and heart failure. If the symptoms are not relieved or aggravated, it is recommended to consult a doctor in time, improve the examination, clarify the cause of the disease, and standardize the treatment under the guidance of the doctor, so as to avoid delaying the condition.