How long the low-differentiated non-small cell lung cancer can live mainly depends on the progress of the patient’s disease and the specific degree of differentiation, in addition to the patient’s physical condition also has a certain relationship with the current survival rate within 5 years is low. The median survival period of advanced non-small cell lung cancer is 8-10 months. Clinically speaking, according to its differentiation degree, it can be divided into undifferentiated cancer, low-differentiated cancer, moderately differentiated cancer and highly differentiated cancer. Generally speaking, the lower the degree of differentiation, the higher the degree of malignancy. Nearly 80% of lung cancer patients are non-small cell lung cancer, which is usually found in middle or late stage, and the prognosis is relatively poor. Although the spread is late, distant metastasis may have already appeared at this moment. If the patient is in good physical condition, he may survive longer because of his stronger ability to resist the side effects brought by chemotherapy and radiotherapy. Once a lung tumor is found, it is necessary to go to the thoracic surgery department of the hospital in time and receive standardized treatment under the guidance of doctors.