Emphysema and pulmonary nodules do not belong to the same disease, you can not simply say which one is more serious, which of the two diseases is more serious depends on the cause of the disease, depending on the specific circumstances. 1. Emphysema is a chronic respiratory disease, emphysema patients alveolar elasticity deterioration, resulting in gas aggregation, expansion. Common symptoms in emphysema patients are shortness of breath, cough and sputum. Whether emphysema is serious or not depends on the impact on lung function. If the patient’s symptoms are mild, it will not have much impact, while obvious symptoms will be more serious. 2. Lung nodules are soft tissue lesions with a diameter of ≤3cm that grow on the lungs and are called nodules. If the lung nodule is small, under 8mm, it can be checked regularly. If the lung nodule is large, combined with burr, pleural depression, etc., this situation is more serious, and the patient should go to the hospital in time to receive examination and correct treatment.