Lung enhancement CT can initially determine the size of benign and malignant possibilities, but cannot make the final diagnosis, the final diagnosis needs to be made through pathological puncture biopsy or surgical resection. Lung enhancement CT is based on plain CT, further observation of the enhancement characteristics of the lesion, through the examination of the lesion has enhancement, the degree of enhancement is not uniform, for malignant tumors have a certain role in suggesting. Combined with the appearance of a series of malignant signs in the scanning examination, such as uneven edges, visible burrs, lobulation, vacuoles, pleural pulling, etc., it will highly suggest that the lesion is a malignant lesion. However, it is not possible to make the final judgment of benign or malignant, and it is necessary to combine with pathological puncture and surgical resection to observe the changes of histiocytes in order to make a benign diagnosis of the lesion. If malignancy is highly suspected through examination, it is necessary to consult a doctor for timely observation and standardized treatment under the guidance of clinicians.