Some patients with moderately differentiated lung adenocarcinoma can be cured, and those who can be cured are mostly those who do not have high risk of recurrence and metastasis in the early stage. Cured here generally means that patients with moderately differentiated lung adenocarcinoma are clinically cured, and the cured patients can generally survive for five years or more after surgery, and during this period, no evidence of disease progression of moderately differentiated lung adenocarcinoma can be found in the imaging and hematological examinations. Once a patient with moderately differentiated adenocarcinoma is clinically cured, the chance of recurrence and metastasis of the disease is very low, but since moderately differentiated adenocarcinoma is still a malignant tumor, the cured patients still need to be followed up and observed on a regular basis, and the general check-up once a year is enough.