The volume of pure ground glass nodule in lung is about 8mm, whether it is serious or not needs to be combined with the condition of the nodule itself, which belongs to benign lesion and is not serious; if it is malignant lesion, it belongs to relatively serious situation. 1. Benign lesions: pure ground-glass nodules in the lungs may be associated with inflammation, alveolar hemorrhage, adenomas and other benign lesions, and the corresponding lesions can be eliminated after treatment; benign tumors are slow in progression, and do not belong to a particularly serious condition, so they can be reviewed regularly first. 2. Malignant lesions: pure ground-glass nodules in the lungs are accompanied by malignant symptoms, such as lobes, burrs, vacuoles, vascular clusters, etc., and the final examination result is malignant, which is a relatively serious condition and needs to be resected by surgery in time. The probability of malignancy increases significantly when the lungs are found to be filled with ground-glass nodules, which increase in size and solidity during the review process, so it is necessary to consult a doctor in a timely manner and carry out standardized treatment under the guidance of the clinician after the diagnosis of the disease, so as to avoid delays in the condition.