Lung cancer is divided into two categories: non-small cell lung cancer and small cell lung cancer, which have very different biological behaviors, treatment methods and prognosis. Patients must undergo pathological examination to identify non-small cell lung cancer or small cell lung cancer and have accurate staging before treatment. This is critical because treatment and prognosis vary greatly with different staging. In summary: no treatment without pathological diagnosis and no treatment without staging. The following is an overview of the treatment of non-small cell lung cancer. Stage Ia patients do not need chemotherapy after surgery. Stage Ib patients with high-risk factors are given systemic chemotherapy after surgery, while those without high-risk factors are given observation. Those who do not want to operate or cannot operate due to physical reasons will be treated with stereotactic radiation therapy, the efficacy of which is similar to that of surgery. 2.Stage II Surgery is preferred, and systemic chemotherapy is given after surgery. 3.Stage III Stage III is divided into stage IIIa and stage IIIb. Stage IIIa is divided into two types: operable and inoperable. Surgery is preferred for operable patients, and postoperative systemic chemotherapy is given. For inoperable patients, simultaneous radiotherapy will be administered. Stage IIIb patients will be treated with simultaneous radiotherapy. Stage IV Patients with wild-type EGFR test, if the behavioral status score is good, systemic chemotherapy is given, if the behavioral status score is poor, palliative treatment is given, patients with mutated EGFR test can be given targeted therapy (ERSA or Troche) and systemic chemotherapy is given after progression, or chemotherapy is given first and systemic chemotherapy is given after progression. Targeted therapy (ERSA or Tricor). For chemotherapy and radiotherapy, pemetrexed + cisplatin is preferred for adenocarcinoma and docetaxel + cisplatin or gemcitabine + cisplatin for squamous carcinoma. 5.Therapeutic status of Chinese medicine Complementary treatment with Chinese medicine during chemotherapy or radiotherapy can reduce the toxicity of radiotherapy and may have certain potentiating effect. For patients who cannot have surgery and radiotherapy, Chinese medicine can improve the symptoms and prolong the survival.