Cough without phlegm is considered to be caused by colds, bronchitis, allergic cough, etc. It needs symptomatic and causative treatment, mainly taking antibacterial treatment, antiallergic treatment, and cough suppression. 1. Antibacterial treatment: there is no specific drug for viral infection, mainly drink more water and rest. If it is caused by bacterial infection, you can take oral amoxicillin, cefadroxil and other antibiotic drugs, but pay attention to whether it is allergic to drugs. 2. Anti-allergy treatment: If the cough is paroxysmal, consider that it is caused by allergy, you can take anti-allergy drugs, such as cetirizine, loratadine and so on. 3. Cough suppressant treatment: If the cough is more serious, you can take cough suppressant drugs such as compound licorice tablets, acute syrup, dextromethorphan, etc., which can relieve the symptoms. Cough without sputum may also have other causes, such as tracheal foreign body, acute and chronic pharyngolaryngitis, bronchial tumors and pleural diseases, etc., it is recommended to consult a doctor in time, to clarify the cause of the medication prescribed by the doctor, and to avoid blindly using their own medication.