The occurrence of multiple nodules in the lungs depends on the size of the nodules whether the edges are faint or clear, and also on the nature of the nodules, which have the potential to be benign and malignant. Generally, benign multiple nodules in the lungs are in the majority. Multiple nodules in the lungs are often associated with inflammation, tuberculosis, calcification, and many other causes. If multiple nodules in the lungs are found, it is important to inform your doctor of your living and working environment, as appropriate, so that your doctor can understand whether there are harmful substances around you that form a trigger for the onset of the disease. It is important to review regularly according to the doctor’s medical advice, and if the nodules are found to increase and become larger, further tests such as bronchoscopy, puncture biopsy, etc. are required.