Ground glass nodules in the upper lobes of the lungs are not very dangerous if benign, but need to be taken seriously if they are malignant. Most of the ground-glass nodules in the upper lobes of the lungs are benign and generally not dangerous, but we cannot rule out the possibility that they may be malignant. However, the possibility of malignancy cannot be ruled out. It needs to be judged according to the size and shape of the nodule. If the diameter is less than 8mm, most of the ground glass nodules are benign, and generally do not need to be dealt with, and regular review of chest CT can be done to observe whether there is any change in the nodule. Larger diameter upper lobe ground glass nodules with lobular, pulling sign, short burr and other changes may be malignant, and require further examination, combined with clinical symptoms and imaging data to determine the nature of the nodule. If the nodule is malignant, thoracic surgery can be performed as early as possible. If ground-glass nodules are found in the upper lobe of the lungs, it is recommended that the patient seek medical treatment in time to avoid delaying the condition.