Immunotherapy for lung squamous carcinoma is very effective, which includes two levels: 1. For patients with advanced lung squamous carcinoma, after the application of chemotherapy or radiotherapy fails, then immunotherapy can still achieve 20% efficiency, which is a good result because it has no more alternative treatment options; 2. For earlier lung squamous carcinoma, radiotherapy or radiotherapy combined with chemotherapy can be applied. After radiotherapy or radiotherapy and chemotherapy, then immunotherapy can increase the efficiency and survival rate of patients by a lot. At the same time, for lung squamous carcinoma, especially for advanced lung squamous carcinoma, the combination of chemotherapy and immunotherapy is now advocated, and the patient’s efficiency is much higher than the two alone, and the patient’s survival is also greatly extended. Therefore, in the past, there were fewer treatment methods for lung squamous carcinoma because there was no targeted therapy, but after the emergence of immunotherapy, the treatment situation of lung squamous carcinoma has been greatly improved, and the cure rate and survival rate of patients have been significantly increased.