Whether or not it is important to have ground-glass nodules in the lower lobes of both lungs cannot be generalized, but needs to be combined with whether or not there are inflammatory changes, or malignant tumors or benign lesions to decide. 1. Inflammatory changes: may be caused by bacterial infection, mycobacterial infection, etc., after active treatment is generally not serious, do not worry too much. In the current medical situation, this kind of disease can be controlled after systematic and regular treatment. 2. Malignant tumors: malignant lung tumors with unclear boundaries of ground-glass nodules, accompanied by lobular, burr sign, etc., which are more serious and may prolong the life if detected early, diagnosed early and treated early. 3. Benign tumors: benign tumors have clear boundaries and are usually infiltrated by inflammation. Usually after surgical resection of benign tumors, the prognosis is good, and regular review is needed. It is important to note that when there are ground glass nodules in the lower lobes of both lungs, attention should be paid to regular review under the guidance of the doctor to facilitate timely treatment.