Small 2mm nodules in the lungs are generally not important, but malignancy cannot be ruled out. The presence of 2mm small nodules in the lungs, patients generally do not need to worry too much, most of them are benign conditions, such as calcified foci. If there are no symptoms, patients can follow up after one year; or follow the doctor’s instructions for regular retesting. For some nodules caused by inflammatory causes, such as pneumonia and tuberculosis, patients can be treated with medications, such as cefixime and rifampicin. Lung 2mm nodules can not rule out the possibility of malignancy, especially for the high risk of lung malignancy, can be examined by CT to observe whether the lung nodule proliferation, morphology, density changes. If it is malignant it should be treated with surgery, radiotherapy and other treatments according to the specific situation.