With the development of medical technology nowadays, more and more people can find lung nodules through physical examination, the incidence rate is relatively high, so the number of people with lung nodules is relatively high. The formation of lung nodules is mainly related to lung inflammation and infection, tuberculosis, lung tumors and other diseases, in addition to a history of smoking, chemical plants, dust factory workers and other susceptible people. Lung nodules can be categorized into benign and malignant. 1. Benign: In general, no special treatment is needed for benign lung nodules, but regular checkups are needed to monitor the growth of the nodules. Benign lung nodules are relatively small. Patients with benign lung nodules should quit smoking and drinking, avoid stimulating foods, get enough sleep, and exercise properly to strengthen the body’s resistance. 2. Malignant: When the lung nodules are large, with non-smooth edges and burr signs, as well as coughing, chest pain, coughing up blood, fever and other manifestations, we need to be highly alert to the possibility of malignant nodules. Malignant lung nodules can be treated with surgery, radiotherapy, chemotherapy and targeted drug therapy according to the condition. There are many reasons for the formation of lung nodules, when there is a change in the condition, you should go to a regular hospital, to clarify the cause of the disease, under the guidance of the doctor symptomatic treatment.