Dry cough is one of the more common respiratory symptoms in children, and there are various causes of dry cough, including respiratory tract infections, allergic diseases, and foreign body aspiration, etc. Different causes are treated differently. Therefore, identifying the cause of dry cough is the first step to effective treatment. First of all, if the dry cough is caused by an upper respiratory tract infection, and is accompanied by a stuffy nose and sore throat in addition to a dry cough, you can usually apply some common medications for colds or finished cough syrups for symptomatic treatment, and if there is significant improvement and the child is in good spirits, he or she will most likely be cured. Then let the child rest well and avoid sweets, overly greasy food or food that is easily allergic. Secondly, bronchitis and pneumonia can also present with dry cough symptoms. If left untreated, progressive cough aggravation, sputum, fever, increased respiration, chest tightness, and even dyspnea can occur, requiring prompt consultation and, if necessary, improvement of blood tests, chest radiographs, and pathogenic tests to clarify the cause, which will likely require antibiotic treatment. Some patients can also improve significantly with respiratory management such as nebulization. Allergic diseases such as cough variant asthma can also cause coughing. Children may have allergic rhinitis, which is usually treated with anti-allergy and nebulization therapy with significant results. Foreign body inhalation can also cause an irritating cough that manifests as a dry cough. If the cough starts suddenly and there was a choking cough at the beginning, we should be highly alert for foreign body inhalation and perform bronchoscopic treatment if necessary. In short, different measures can be taken for dry cough caused by different etiologies.