Analysis of illness: Hello, cough itself is not an independent disease, but a defensive response to remove foreign bodies in the respiratory tract. A slight cough is harmless to the body and can be treated according to the cause, without using cough medicine. However, cough medicine can be used as appropriate when it causes severe pain to patients. There are many reasons for cough, such as acute and chronic inflammation of respiratory tract, foreign body in respiratory tract, respiratory tract compression, allergic reaction, pleural irritation and so on. Therefore, when you encounter a cough patient, you should first comprehensively analyze the condition, find out the cause, and choose the appropriate cough medicine on the basis of treating the cause, and treat the symptoms. Analysis of illness: Cough is mostly caused by upper respiratory tract infection, which generally requires antibacterial and anti-inflammatory. If oral drugs are ineffective, infusion therapy is recommended. Use under the guidance of a local doctor. If you have phlegm, you can try taking fresh bamboo juice orally. It is recommended to find a doctor for auscultation and fluoroscopy, and take a film to check the diagnosis if necessary.