Resection is crucial for treating non-small cell lung cancer. Routine follow-up after surgery is an effective method for early detection and treatment of tumor recurrence and metastasis or the second primary tumor, which can improve the quality of life of patients and their prognosis. This consensus aims to provide a reference for colleagues responsible for postoperative follow-up of non-small cell lung cancer patients in China, and further improve the standardization of lung cancer diagnosis and treatment.