Symptoms of cough with sputum and chest pain. It is mainly considered to be caused by lung diseases, and infection of the lungs is the main cause. Various viral, bacterial, and mycoplasma infections may cause pneumonia and bronchitis, and it is easy to develop cough and sputum and have chest pain. Severe cases can also cause fever and breathing difficulties. Active treatment with antibacterial and antiviral drugs is needed, as well as various symptomatic supportive treatments. Pleurisy can also easily cause these symptoms, often with inspiratory chest pain and also with fever and cough. If such symptoms occur frequently and do not improve with antibacterial and cough medications, it is also necessary to consider that it is caused by lung cancer, and appropriate tests need to be done in the hospital.