Stage IA lung adenocarcinoma is an early stage lung cancer, which can be treated with radical surgery and postoperative radiotherapy and other adjuvant treatments to achieve a better treatment effect, and the probability of recurrence after surgery is relatively low, about 20%. The recurrence rate of stage IA lung adenocarcinoma after surgery is mainly related to the immunity and living habits of individuals, so it is important to maintain good living habits, improve immunity and have regular review after surgery. Stage IA lung adenocarcinoma surgery can generally remove the visible tumor cells cleanly from the patient’s body, but the oncogene still exists in his body. When the patient’s resistance decreases, the oncogene will prompt the normal cells to turn into cancer cells again, i.e., cancerous transformation will occur and slowly grow into tumor, resulting in tumor recurrence and metastasis. Within 2 years after treatment is the period with high chance of recurrence. After surgery, it is necessary to follow the medical advice for regular review and early detection when recurrence occurs, and timely intervention and treatment. The recurrence rate of stage IA lung adenocarcinoma after surgery is related to personal habits. Long-term exposure to carcinogenic substances such as formalin, long-term staying up late, long-term smoking, long-term lack of vitamin A in the diet, etc. will increase the recurrence rate. Therefore, it is recommended that patients should maintain good living and eating habits, stay away from harmful environment, quit smoking and limit alcohol, have a balanced diet, keep a relaxed mood, actively exercise and do more aerobic physical exercise to increase body resistance to avoid postoperative recurrence, in addition to regular review.