The severity of multiple MGN and single MGN needs to be judged according to the nature and size of the nodules, and cannot be generalized. Multiple Mulled Glass Nodules are usually caused by inflammation and infection. Generally speaking, if the nodules are benign and there are no other discomforts, they are not serious, but if the nodules are malignant and accompanied by pain and other discomforts, they are serious. A single ground-glass nodule is usually caused by pneumonia, long-term smoking and other factors, but if the patient’s nodule is malignant in nature, even if there is only one nodule, it is still a more serious phenomenon. If the nodule is benign and there are no other uncomfortable symptoms, there is no need for special treatment and regular checkups are sufficient. Once the patient has multiple ground-glass nodules or single ground-glass nodules, it is recommended to go to the hospital for further examination to clarify the nature of the nodules, and then choose the appropriate treatment according to the actual situation.