Patients with early-onset lung cancer can adopt comprehensive treatment modes such as surgery, radiotherapy, chemotherapy, targeted therapy and so on according to their physical condition, pathological type of tumor and molecular typing. 1. Surgery: Generally speaking, the first choice of treatment for patients with early-onset lung cancer is surgery. The indications of surgical treatment are mainly non-small cell lung cancer with clinical staging of stage I, stage II and some stage III. 2. Radiation therapy: if patients with early-onset lung cancer do not want to have surgery or cannot have surgery for various reasons, they can choose radiation therapy. Since radiation therapy is to destroy the tumor by means of rays, there will be different degrees of adverse reactions, and the symptoms will be improved after stopping radiation therapy. 3. Chemotherapy: Chemotherapy is to take cytotoxic drugs to destroy cancer cells. Different pathological types will use different chemotherapy drugs, and it is recommended to choose the suitable chemotherapy program under the guidance of doctor. 4. Targeted therapy: if the patient is already in the middle or late stage of the disease at the time of diagnosis and there is no chance of surgery, and if it is clear that there are driver genes and mutation types through genetic testing, molecular targeted drugs can be used under the guidance of doctors for treatment. Early-onset lung cancer patients are recommended to choose appropriate treatment plan according to the advice of attending physician, and improve the prognosis of patients through active treatment.