The malignancy of microinvasive lung cancer alveolar type is generally not very high, and the prognosis is usually better after surgical treatment. Lung adenocarcinoma alveolar type belongs to lung adenocarcinoma, which is a subtype of lung adenocarcinoma. At present, it is generally believed that the development process of lung adenocarcinoma is from atypical adenomatous hyperplasia to adenocarcinoma in situ to micro-invasive adenocarcinoma to invasive adenocarcinoma, and its malignant degree increases step by step. However, the first three types of lung adenocarcinomas are in the early stage of the tumors, and they can be operated with radical surgery, and the patients can be cured by the surgery and can have a long term survival. If a patient is diagnosed with micro-invasive lung cancer of alveolar type, he/she should go to the hospital as early as possible to see a specialist for surgical treatment, and the doctor should decide whether adjuvant treatments such as radiotherapy and chemotherapy are needed according to the situation, so as to minimize the recurrence and improve the long-term survival rate of the patient. After surgery, patients should follow the doctor’s instructions and go back to the hospital for follow-up regularly to clarify the treatment effect, recurrence and distant metastasis.