Patient, male, 83 years old. Has a history of hypertension. Physical examination revealed a right renal occupancy. Further CT enhancement, and MRI enhancement suggested right kidney occupancy and possible right kidney cancer. The tumor size was 2.8*2.5 cm, located in the right kidney mid-pole dorsal side near the renal hilum, 50% of the tumor was located in the renal parenchyma; GFR of both kidneys was 23.6 on the left and 26,7 on the right. The tumor was revealed laparoscopically, and the radiofrequency needle was penetrated into the tumor (Fig1), and the tumor was coagulated and necrosed after radiofrequency (fig2); the protruding kidney surface tissue was excised and sent to pathology (fig3). The operation went well, with intraoperative bleeding of about 20 mml. He was discharged from the hospital 3 days after surgery. At present, the 5-year efficacy of radiofrequency ablation for the treatment of renal tumors less than 4 cm is close to that of traditional open surgery, which is a new minimally invasive treatment for renal tumors. Compared with open or laparoscopic partial nephrectomy, there are basically no postoperative complications such as tumor bleeding and urinary leakage, and the renal function is protected to the greatest extent and patients recover faster. In our center, radiofrequency treatment is used for patients younger than 3 cm who are older combined with cardiovascular and cerebrovascular diseases, diabetes and other patients with high risk of conventional surgery or solitary kidney, and very good results are achieved.