The statement that multiple lung nodules are not serious is too one-sided. If it is caused by a malignant tumor, it is relatively serious, if it is benign, it is relatively mild, but both of them should be highly valued. It is not possible to generalize that multiple lung nodules are not serious, but need to be differentiated according to the cause of the disease. If the multiple lung nodules are caused by malignant tumors, such as metastatic lung cancer, then the lung nodules are malignant and more serious, and require timely surgery or radiotherapy to clear the trachea, bronchus, and lymph nodes. However, if the nodules are benign, such as inflammatory nodules, there is a possibility of cure and the severity is relatively mild. However, it is not to be ignored, there is also the possibility of developing into a serious disease, it is recommended to consult a doctor in time and follow the medical advice.