A 0.2-cm solid nodule in the upper lobe of the right lung usually does not require treatment for the time being if there are no symptoms, and regular follow-up is sufficient. Lung nodules are usually evaluated according to the size, density and shape of the nodule, the patient’s age, smoking history and other relevant factors, and then the appropriate treatment is selected. Solid lung nodules smaller than 5mm can be left untreated for the time being if there are no respiratory symptoms such as cough, sputum, chest pain, etc., and the nodules are found during the physical examination, and the patient should undergo regular chest CT examinations. Lung nodules of 0.2cm are relatively small and solid, with a low possibility of malignancy, and it is recommended that they be rechecked every six months to a year. If the review finds that the nature of the nodule has changed, there are signs of burr, lobulation, pleural pulling, etc., and there is a tendency of gradual growth, it is necessary to improve the relevant examinations and then carry out surgical resection in a timely manner.