Tumor in the lung may have the following symptoms: 1. If it is a malignant tumor, there may be blood in the sputum, massive hemoptysis or repeated lung infection with poor anti-infection treatment, and dry cough or a small amount of white sputum. 2. If combined with infection, there may be fever and coughing yellow pus sputum later. 3. If there is bone metastasis, there may be local pain accompanied by poor nausea, low fever, wasting, etc. 5. If in the early stage of the disease or benign tumor, there may also be no symptoms. Therefore, it is necessary to have regular medical checkups and improve chest CT examination for early detection of the disease.