Small ground glass nodules in the lower lobe of the right lung are detected by high-resolution CT of the chest, and the nodules need to be judged according to their size and nature. If the ground glass nodules are smaller than 5 mm, they are mostly chronic lung infections and do not require special treatment, and can be dynamically reviewed with high-resolution CT of the chest. If the nodules are between 6-8 mm, close follow-up is needed to see if the nodules are growing. If the nodule is growing, with lobar, short burr, pleural pulling sign, pleural depression sign and other early lung cancer changes, further enhanced CT examination of the chest is needed. If necessary, percutaneous lung aspiration histocytological examination should be given to clarify whether it is early lung cancer or not, and if necessary, thoracic surgeon can be asked to perform early surgical intervention. In conclusion, small ground glass nodules in the lower lobe of the right lung need to be taken seriously, and the larger the nodule, the more malignant it is, which requires dynamic follow-up.