Lung nodules 6mm are generally of low risk, with close observation as the mainstay and surgical resection if necessary. Clinical studies have shown that the majority of lung nodules 6mm are benign, and in general, more than 90% are benign nodules. The risk of benign nodules is low and close observation is sufficient. If the malignant nodule is 6mm, it is generally carcinoma in situ, has not yet entered the infiltrative stage, and the progress is inactive, so the risk is generally not too great, and close observation is the main focus, with surgical resection if necessary. If 6mm lung nodule grows faster in a short period of time or the density of the nodule keeps increasing, then it suggests malignant change and is easy to develop into malignant tumor, the risk of this case is higher, and it is necessary to use surgical method to remove the nodule. If the examination report shows that the lung nodule is 6mm, the patient should consult the doctor in time and choose the treatment plan after the doctor’s comprehensive judgment.