Squamous cell carcinoma of lung accounts for about 20%-30% of lung cancer. The best treatment of lung squamous cell carcinoma depends on the location of squamous cell carcinoma. If it is a central lung cancer, it invades the great pulmonary vessels and is accompanied by lymph node metastasis, which is called locally advanced lung cancer. Concurrent radiotherapy and chemotherapy is the standard treatment at this time. According to the latest clinical research, immunotherapy can be used to maintain after concurrent radiotherapy and chemotherapy. If lung cancer metastasizes, the treatment plan should be decided according to the location of metastasis. Head metastasis can be treated with radiotherapy, bone metastasis can also be treated with chemotherapy plus radiotherapy, and liver metastasis is mainly treated with chemotherapy.