Patients with lung cancer, in the early stage, may have symptoms of coughing up blood. Some patients not only cough up blood but may also experience coughing or coughing up phlegm. In more severe cases, there may be symptoms of fever or difficulty breathing, and some may experience chest tightness or chest pain. If such conditions are detected, timely treatment is necessary to effectively alleviate the symptoms. It is recommended to consider chemotherapy or radiotherapy for treatment. Patients themselves must pay attention to rest and avoid excessive fatigue.