Lung nodules are needed to quit smoking. With the development of chest CT technology, many patients with lung nodules are now found in the clinic, part of which are caused by benign diseases, and part of which are malignant. Smoking itself may lead to the emergence of lung nodules, and smoking is also one of the risk factors for the development of lung cancer, so these patients must pay attention to quit smoking. If you take care to quit smoking and pay attention to changes in lifestyle habits, it is possible that benign nodules will not progress further. If lung nodules are found, it is recommended to go to a specialized respiratory department for a comprehensive evaluation and pay attention to smoking cessation at the same time.