Whether multiple nodules in both lungs is serious or not cannot be generalized, it depends on the actual situation, and how to treat it also depends on the nature of the nodules. Double lung multiple nodules refers to the presence of two or more nodules in the lungs, double lung multiple nodules can be both benign and malignant, as follows: 1, produced by the lung chronic inflammation stimulation, including lung tuberculosis caused by double lung multiple nodules, which is most common in the millet type of tuberculosis, the nodules are generally benign, through active anti-tuberculosis treatment, the vast majority of them can be cured, so is not a serious situation; 2, if double lung multiple nodules is due to metastatic pulmonary tuberculosis, the majority of them can be cured. If the multiple nodules in both lungs are caused by metastatic lung cancer, that is, malignant nodules, it is a more serious situation, which indicates that the patient is often in the advanced stage and has lost the chance of surgery, and generally adopts symptomatic treatment and corresponding chemotherapy and radiotherapy.