Chemotherapy is not routinely recommended after surgery for early stage lung cancer Ⅰa2. If the postoperative margins are positive for early stage lung cancer Ⅰa2, then it can be operated again for treatment, and for patients who can not be operated for other reasons, postoperative chemotherapy combined with radiotherapy is recommended, and it is recommended to go to the hospital for standardized treatment. If there is no contraindication to surgery for early stage Ⅰa2 lung cancer, it should be treated by surgical resection, which can be done by lobectomy or total lung resection with hilar and mediastinal lymph node dissection. Postoperative adjuvant chemotherapy is not recommended for completely resected early stage Ia2 lung cancer. For early stage lung cancer Ⅰa2 with positive margins, reoperation is recommended, and for patients who cannot be reopened for any other reasons, postoperative chemotherapy combined with radiotherapy treatment is recommended. For early stage lung cancer Ⅰa2, it is recommended to go to the hospital for clear diagnosis and standardized treatment so as not to delay the condition.