Solid ground-glass nodules in the lungs should be referred to as mixed ground-glass nodules that include a solid component as well as a ground-glass component. Mixed ground-glass nodules can’t simply be said to be dangerous or not, but need to be determined on a case-by-case basis. In case of mixed ground glass nodules in the lungs, the causes include conditions such as tuberculosis, lung infections, and pulmonary nodular disease, and most of them are benign. However, mixed ground glass nodules have a high rate of malignancy and need to be taken seriously. If tuberculosis is considered, it may become smaller or disappear after early, combined, regular and moderate anti-tuberculosis treatment; if infectious disease is considered, after two weeks of anti-infectious treatment, the nodules may become smaller or disappear on repeat lung CT; if there is no change of the nodules on repeat CT, repeat lung CT after half a year; if there is a change in size of the ground-glass nodules in the process of repeat CT, such as vacuolar sign, vascular sign, pleural depression sign, etc., it may be the result of a change in size of the nodules, and it may be the result of a change in size of the nodules. depression sign, etc., there is a possibility of a malignant lung tumor, which is more dangerous. If imaging shows solid ground-glass nodules in the lungs, it is important to seek further medical attention to further define the diagnosis and provide early treatment.