Cough and sputum are common symptoms of respiratory diseases and can manifest in many respiratory diseases, such as lung infections, tuberculosis, lung tumors, upper respiratory tract infections, and other diseases. If a disease is diagnosed as causing it, treatment needs to be directed at this aspect, that is, at the cause of the disease. You can give cough relief and phlegm treatment such as Honey Refined Chuanbei Loquat Paste and Lung Power Cough Compound. Usually eat a light diet and do not eat spicy or stimulating foods. If coughing and phlegm appear, you should go to the hospital for further examination, including chest X-ray and chest CT to clarify the cause of coughing and phlegm.