You can drink alcohol more than three years after surgery for lung carcinoma in situ, but it is not recommended or you should drink less. Lung carcinoma in situ refers to cancer whose primary site is in the lungs without infiltration and metastasis to other tissues of the body, which belongs to early stage lung cancer. Patients undergo timely surgical treatment, and it is possible to remove the lesion completely and achieve the possibility of cure. After surgery, patients need to pay more attention to correct bad life habits and quit smoking and drinking in time. More than three years after surgery for lung carcinoma in situ, patients are generally able to drink alcohol, but if not necessary, it is recommended not to drink alcohol, or drink less, and avoid large amount or long-term alcohol abuse, which will cause more harm to the digestive system, and also affect the health of liver and kidney. For patients with lung in situ cancer, they need to pay attention to the rationality of diet, choose to eat some light and easy-to-digest food, strengthen the nutritional intake, and quit smoking in time. They can also exercise properly and ensure regular work and rest. Avoid alcoholism by drinking less or no alcohol. At the same time, go to the hospital regularly for review, to avoid the recurrence of the disease, endangering the health.