Pulmonary nodular shadow is mostly not serious, but the details should be judged by the nature and size of the nodule. Pulmonary nodular shadow is mostly found during lung examination, mostly benign nodules, and a small percentage of them are early tumors. Most benign nodular shadows in the lungs are caused by infections, benign lung tumors, etc. At this time, there is no serious impact on health, and some patients do not need special treatment, and regular review is sufficient. If the nodule is malignant, it needs to be treated actively, such as thoracoscopic resection of lung nodules, and depending on the extent of infiltration, chemotherapy or targeted therapy may be required. If left untreated, the nodule may further increase in size and develop distant metastasis, thus greatly shortening the patient’s survival and causing various clinical symptoms caused by the tumor. Therefore, once the presence of lung nodule shadow is detected, it is important to actively cooperate with doctors for examination and treatment. Usually, you should have good living habits, eat less high-fat food and stimulating food, and eat more high-protein food and fruits rich in vitamin C. Try not to smoke and drink, and do more physical activities to strengthen the body’s resistance. Pay attention to rest, ensure a regular rest and rest schedule, and keep your mood relaxed.