Cough is a common symptom of respiratory diseases and can be accompanied by coughing up sputum and fever. Once a cough develops, what to do to treat it is closely related to the cause of the cough. Common causes of cough include acute or chronic bronchitis, lung infections, lung tumors, etc. If the chronic cough is caused by physical and chemical factors such as long-term smoking that stimulate the respiratory tract, the first step is to quit smoking. If the cough is acute and recurrent, accompanied by coughing up white sputum, as it is mostly a viral infection, symptomatic treatment with cough suppressants such as Ambroxol and Bromhexine is recommended; if there is yellow pus sputum or even fever, a combined bacterial infection may be considered, then in addition to symptomatic treatment with cough suppressants and sputum suppressants, anti-infective treatment is also needed, and the use of The use of antibacterial drugs needs to be guided by a specialist, and commonly used drugs include cephalosporins, amoxicillin, etc. If a chronic cough persists, it is necessary to be alert to the occurrence of lung tumors, especially in elderly people who have been smoking for a long time, and to focus on the detection of lung cancer. Therefore, the treatment of cough depends on the cause of the disease, and symptomatic treatment is only one aspect; moreover, we need to pay attention to long-term, prolonged cough and be alert to the occurrence of malignant diseases, and once it occurs, we also need to promptly visit the respiratory department of the hospital.