Lung nodules depend on the nature of the nodule, benign nodules are not relevant, if it is a malignant nodule then it is certainly serious, so once the lung nodules are found, it is best to improve the examination to clarify its nature. In the current medical conditions are better, in the conditions of people’s high standard of living, health check-ups have been given attention, in the daily physical examination will find lung nodules, once found nodules do not be too nervous. It is crucial to actively conduct examinations to clarify their nature and treat them symptomatically. In this case, we can consider active anti-infection treatment, which may make the nodule disappear. If the nature of the nodule cannot be clarified, we can consider regular observation, and if the nodule grows during observation, we should pay attention to it and perform puncture if necessary. If there is a history of cancer in the past and a lung nodule appears in the review, it is important to pay attention to this situation, as it may have metastasized and necessary treatment must be taken. Pulmonary nodules are not scary, they are mostly benign and rarely malignant. Once they are detected, active examination and treatment measures should be taken to control them. In cases where the nature of the nodule is not clear, periodic review can be taken.