Lung nodules are categorized into benign nodules and malignant nodules, benign nodules are not scary, malignant nodules need to be taken seriously, once the patient finds lung nodules, the nature of the nodules should be clarified in time. The X-ray of benign nodules tends to have a regular nodule surface pattern, clear surrounding boundaries, even texture inside the nodule, no ground glass-like shadow and signs such as burrs. Considering that it may be a benign disease, it is generally not terrible, but it needs to choose medication or surgery to support the symptomatic treatment according to the specific symptoms of the patient. If there are burrs on the edge of the nodule, irregular edge, lobar sign, pleural pulling sign, etc., then it is initially considered to be suspected malignant and relatively serious, and further related examinations should be improved, such as looking for cancer cells in sputum, complete set of tumor markers, bronchoscopic biopsy, percutaneous lung puncture biopsy, etc. If patients have abnormalities in the above examinations, they should choose the corresponding treatment according to different clinicopathologic stages. Patients who find lung nodules need not panic, and should go to local hospitals for further examination to clarify their nature in time, so as not to delay the condition and miss the best time for treatment.