Enhanced CT has a certain accuracy in determining benign and malignant tumors, but it cannot make a clinical diagnosis of benign and malignant tumors. Enhanced CT is the CT scanning after injecting the contrast agent into the blood vessels. Generally, after enhancement, the enhancement of benign and malignant tumor lesions, the blood supply of the tumor, and the morphology of the tumor on the CT image are all different, so it can be used to differentiate benign and malignant tumors, however, the enhanced CT to judge the benignness or malignancy of the tumor can only play an auxiliary role. In order to diagnose benign and malignant tumors clinically, it is generally not only through the enhancement of CT examination, but also need to puncture biopsy of benign and malignant tumor foci, through the pathological results of biopsy tissue in order to completely distinguish between benign and malignant tumors.