Lung cancer cannot be 100% cured in early stage. Lung cancer is a kind of malignant tumor disease caused by malignant tumor cells originating from the lungs, which is a common and frequent disease among all malignant tumor diseases. According to TNM staging, early stage lung cancer generally refers to stage I lung cancer, which means that the tumor cells in the patient’s body are confined to the lungs and have not spread or metastasized to distant places. Although it is said that early stage lung cancer has a chance to be cured after treatment, the cure rate is definitely not 100%. According to lung cancer diagnosis and treatment guidelines, the 5-year survival rate of stage I lung cancer in China is about 95%. In a word, no matter it is early lung cancer or other malignant tumors, it is impossible to achieve 100% cure, but early diagnosis and treatment can improve the prognosis of the disease and increase the chance of cure. Therefore, once diagnosed with lung cancer, it is necessary to receive scientific treatment as soon as possible.