DSA equipment with CT function has the advantages of accurate positioning and easy puncture, and precise puncture of lesions, ensuring the safety and efficacy of the procedure. Spatial relationship between small lesions and body surface puncture points. Needle entry point, angle and depth of needle entry are instantly visible. During and after the puncture, the relationship between the lesion and the needle tip is precisely displayed, and the spatial relationship between coronal, sagittal and transverse positions can be shown. It is done so that all the tumors to be inactivated are within the effective range, minimizing the damage to normal tissues and preventing the occurrence of complications. The morphology before and after the opening of the radiofrequency needle and the temperature reaching above 90 degrees during treatment are applicable to lung and liver cancer and other solid tumors, and combined with interventional embolization, some patients can reach the degree of radical cure and long-term survival.