Multiple ground glass nodules in the lungs are a more common disease in clinical practice. Multiple ground glass nodules in the lungs found by chest radiograph or chest CT are mostly seen in chronic inflammation, tuberculosis, lung tumors and other diseases, whether multiple ground glass nodules in the lungs are serious or not depends on the nature of the patient’s ground glass nodules. Chronic inflammation or a small amount of bleeding, fibrosis or tuberculosis is a benign disease, generally speaking, will not be a big problem, can be treated or get better on its own, related treatment such as anti-inflammatory, anti-tuberculosis treatment, or close clinical observation and follow-up. If it is a lung tumor, it is more serious, and multiple ground glass nodules suggest advanced tumor, which requires radiotherapy and chemotherapy.