Yellow pus and sputum are usually associated with respiratory infections and smoking, and anti-infective treatment and lifestyle modification measures should be taken according to the cause of the disease. Yellow pus sputum is usually associated with respiratory infections and smoking, including upper respiratory tract infections, pneumonia, bronchitis, etc. Pathogenic infections damage the mucous membranes of the trachea and bronchial tubes, which leads to increased secretion, and prolonged smoking or exposure to irritating living environments such as grease and fumes can also lead to similar symptoms. Therefore, it is necessary to consult a doctor in time, to carry out blood routine, chest X-ray, sputum culture and other tests, to clarify the condition of the premise to take appropriate treatment, for example, if it is clear that there is a bacterial infection, timely anti-infective treatment, the use of antibiotics, such as penicillin, ceftriaxone, etc., and need to carry out timely life care, adhere to the cessation of smoking, to avoid the smoky environment, etc., and the use of drugs in accordance with the instructions of the doctor.