How to treat squamous lung cancer after surgery depends on the patient’s pathological stage, general status score and the presence of adverse prognostic factors. 1. Early stage squamous lung cancer: if there are no adverse prognostic factors, then regular observation is sufficient and no postoperative treatment is needed. 2. Early stage of squamous lung cancer, poorly differentiated or undifferentiated, or the presence of vascular thrombi: these are poor prognostic factors and require adjuvant chemotherapy after surgery. The chemotherapy regimen containing two platinum drugs (cisplatin, carboplatin, lopatin) is preferred, and there are also non-platinum-based chemotherapy regimens: such as paclitaxel combined with gemcitabine. 3. Intermediate and advanced stage of squamous lung cancer: adjuvant radiotherapy is usually needed. Radical radiotherapy is usually used for patients with limited lesions and inaccessible or inoperable surgery. Palliative radiotherapy can inhibit the development of lung tumors, effectively delay the spread of lung tumors and relieve symptoms. Control the metastasis of cancer cells. Targeted therapy, such as Anrotinib, is also available. Comply with the doctor’s instructions for standardized treatment after surgery for squamous lung cancer, and have regular review to avoid delaying the condition.