For babies with dry cough, different intervention methods should be given according to different causes, and the following situations are common: 1. dry air, resulting in dry throat and thus dry cough, you can apply humidifier indoors, drink more water and eat more fresh vegetables and fruits. 2. upper respiratory tract infection, local throat infection, inflammatory stimulation leading to dry cough, in addition to maintaining environmental humidity, viral infection can be given interferon antiviral nebulized inhalation In addition to maintaining the environmental humidity, viral infections can be treated with interferon antiviral nebulizer inhalation, while taking oral diarrhea detoxification punch. In case of bacterial infection, antibiotics can be used as appropriate. 3. Allergic irritant cough, which is common in spring and autumn, is often accompanied by allergic phenomena such as sneezing and eye itching in addition to dry cough.