Generally, there is no need to do genetic test after lung carcinoma in situ surgery, and patients are advised to actively cooperate with doctors for treatment. Genetic test can be used to diagnose disease or predict disease risk, and help to choose treatment drugs, while most of the post-surgical patients of lung carcinoma in situ do not need genetic test, there is no significance of the test and most of the lung carcinoma in situ can be cured after surgery. For a small number of patients with lung carcinoma in situ, genetic testing may be considered in order to know whether they have the gene that causes the disease in their family. After surgery, patients with carcinoma in situ need to see their doctors regularly to monitor their condition. If metastasis or other abnormalities are found during the review, genetic testing can also be done, and radiotherapy and immunotherapy can be adopted in cooperation with doctors. It is suggested that patients with lung in situ cancer should adjust their mentality and actively cooperate with doctors to take treatment measures. Strengthen wound care after surgery to prevent infection and bleeding.