The recurrence rate of stage 1b lung adenocarcinoma invading the pleura is usually related to the severity, invasion area and treatment mode, and cannot be generalized. For stage 1b lung adenocarcinoma invading the dirty pleura, the degree of invasion is relatively mild, and there may be some residue after surgical treatment, so the chance of recurrence is still relatively high, around 40%, and the patient’s condition should be combined with the postoperative radiotherapy to reduce the recurrence. For stage 1b lung adenocarcinoma that invades the dirty pleura, the invasion degree is more serious and the area is larger, which cannot be completely removed after surgical treatment, and the recurrence rate is still higher without auxiliary chemotherapy after surgery. Therefore, patients with lung adenocarcinoma stage 1b invading the pleura should consult doctor timely if necessary according to their own conditions, so as to avoid delay and prevent deterioration of their conditions. Follow the doctor’s instruction and actively standardize the treatment under the doctor’s guidance.