If the cancer is small and there is no sign of metastasis, it may be enough to cut off the lobe where the cancer is located, otherwise it is necessary to cut off one side of the lung. If the cancer is too large and has metastasis, physicians usually do not consider surgery. Adjuvant therapies that cannot be operated, including chemotherapy, immunotherapy, hybrid therapy, radiation therapy, etc., are far less effective than surgery. When to choose radiotherapy: 1.Radiotherapy is similar to surgery, it is also a regional local treatment. 2.Radiotherapy mainly focuses on local symptom control, including hemoptysis or local lung lobe collapse caused by tumor, as well as prevention of local recurrence and control after surgery. 3.It can be used in combination with chemotherapy to enhance the treatment of localized advanced lung cancer or for palliative treatment of advanced lung cancer patients. 4.Usually irradiated once a day, five days a week, with a weekend break, for several weeks. Patients can be treated on an outpatient or inpatient basis. The latest development is the Raptor treatment. When to choose chemotherapy 1. It is effective in the treatment of small cell lung cancer and is usually used alone or in combination with radiation therapy in non-small cell lung cancer, mostly for advanced cancer that cannot be surgically removed. 2. If the patient is in good physical condition, chemotherapy should be considered. If the patient is in poor physical condition, the best supportive therapy, including palliative radiotherapy, should be considered. Chemotherapy mainly focuses on the control of cancer cells in the body, and the decision of which of radiation therapy or chemotherapy should be given first or alternately depends on the clinical condition.