6mm*5mm nodule in the lungs refers to the presence of 6mm*5mm nodule in the lungs found by chest X-ray or CT. According to the definition, a diameter of 5mm-10mm is called a small lung nodule, and according to statistics, the probability of malignancy of small lung nodules is around 2%, and the specific etiology of lung nodules varies, commonly inflammatory, tuberculosis, tumors and so on. According to the guideline recommendations, solid nodules <10mm in diameter, not accompanied by prolonged heavy smoking, elderly people, it is recommended to carry out chest CT once every 6-12 months to observe the changes in the size and nature of the nodules. For nodules of 6mm*5mm in the lungs, it is recommended to visit a specialist to evaluate whether the CT report is accompanied by other adverse signs, and to improve further examination or follow-up according to the doctor's recommendation.