There is no uniform good way to treat the child’s old cough, cough may be related to pneumonia, allergic cough, bronchial asthma and so on. It is recommended to go to the hospital in time to clarify the cause of the disease and treat the cause. 1. Pneumonia: fever, chills, cough, shortness of breath, chest pain and other symptoms may occur. If viral infection can be treated with antiviral therapy such as ribavirin, bacterial pneumonia can be treated with sensitive antibiotics, such as ceftriaxone, amoxicillin and so on. If mycoplasma infection caused by pneumonia need to use azithromycin and other treatment. 2. Allergic cough: repeated coughing can also occur. It is recommended to avoid contact with allergens, if necessary, can take loratadine and other anti-allergy drugs treatment. 3. Bronchial asthma: mainly manifested as dyspnea, chest tightness, cough, accompanied by rales and other symptoms, can also appear old cough symptoms, can use budesonide, fluticasone and other hormone inhalation treatment. There may be other reasons for the child’s old cough, it is recommended to go to the hospital in time to improve the relevant examination, to clarify the cause of the disease. If you need to use drugs, you need to use under the guidance of a doctor.