5-year-old child dry cough for a month may be allergic cough, cough variant asthma, chronic pharyngitis and other causes, need to take medication. 1. Allergic cough: If the 5-year-old child dry cough for a month is caused by allergic cough, you can use antihistamines such as loratadine, cetirizine, and glucocorticosteroids such as prednisolone and hydrocortisone under the guidance of a doctor. 2. Cough variant asthma: for cough variant asthma caused by 5-year-old child dry cough for a month, you can follow the doctor’s prescription inhaled glucocorticosteroids, such as budesonide aerosol. 3. Chronic pharyngitis: 5-year-old child dry cough for a month may also be caused by chronic pharyngitis, for chronic simple pharyngitis patients can use the compound borax gargle gargle and other gargles. 5-year-old child dry cough for a month may also be upper airway cough syndrome, bronchial foreign body, etc., suggest that the child has a dry cough, parents need to take the child to the doctor in time, under the guidance of the doctor to choose the appropriate measures for treatment, the above drugs are required to use under the guidance of the doctor.