Stage II squamous lung cancer is more serious. Lung squamous carcinoma is a malignant neoplastic disease originating from bronchial epithelial cells. Stage II squamous lung cancer belongs to the middle stage of lung cancer, which is divided into Stage IIa and Stage IIb. Among them, the size of tumor lesions in patients with stage IIa is 4-5cm, without regional lymph node and distant organ metastasis; patients with stage IIb mostly refer to the occurrence of tumor metastasis in the ipsilateral bronchus and/or hilar as well as intrapulmonary lymph nodes, but without distant organ metastasis. For stage II squamous lung cancer, if the scope of metastasis is limited, patients can still be treated with surgery, and with further adjuvant radiotherapy and chemotherapy, the prognosis is relatively good, and the five-year survival rate can reach more than 50%. To summarize, patients with stage II squamous lung cancer have lymph node metastasis, the five-year survival rate is low and their condition is relatively serious. It is recommended to go to the hospital for consultation in time, and actively take treatment according to the treatment plan of specialists, so as to improve the quality of life and prolong the survival period.