What kind of kidney tumor can be called giant kidney tumor? Usually, we call the diameter larger than 7cm as giant renal tumor. At present, renal cancer accounts for about 2%~3% of adult malignant tumors and 80%~90% of adult renal malignant tumors. The incidence rate of renal cancer varies in different countries or regions in the world, generally speaking, the incidence rate in developed countries is higher than that in developing countries, urban areas are higher than that in rural areas, there are more males than females, and the ratio of male to female patients is about 2:1, and the age of incidence can be seen in all ages, with a high incidence age of 50-70 years old. According to the statistics of the National Tumor Prevention and Control Research Office and the Health Statistics Information Center of the Ministry of Health, the incidence and death data of tumors in pilot cities and counties in China show that the incidence rate of kidney cancer in China is on the rise year by year. Diagnosed with huge kidney tumor, does the patient still have the chance of kidney-preserving surgery? Whether the patient can be operated or not and whether the patient can be operated or not, it is necessary to do detailed evaluation before operation, which mainly includes the following aspects: ①General condition: first of all, determine the patient’s physical condition, and give certain nutritional support before operation, and adjust the physical condition well before operation. ② Functional assessment: liver and kidney function, coagulation function and so on after a detailed assessment, eligible for surgery. ③Imaging assessment: ultrasound and CT enhancement plus three-dimensional reconstruction (CTA) of the urinary system are used to determine the location and size of the tumor, as well as the presence of daughter foci, vascular invasion, and cancerous embolism, etc., so as to provide a basis for the formulation of the surgical plan. ④ Renal volume assessment: the volume of huge tumors are relatively large, and can even account for 2/3 of the total kidney volume, so it is necessary to first assess the functional status of the remaining kidney after surgery through imaging examinations and reserve the kidney volume in order to guarantee that the renal function does not fail after surgery. There is a certain amount of debate on the kidney preservation surgery for huge tumors, but for the patients with double kidney tumors or sole kidney tumors, it is necessary to make every effort to preserve the kidneys and try to prevent uremia from The patients with huge tumors cannot be operated. What kind of patients with huge renal tumors can not be operated? Patients with other cardiovascular and cerebrovascular diseases: their physical condition is very poor, and they cannot tolerate surgery; ② Extra-renal metastasis of renal tumors: it means that the tumors have been transferred to organs other than kidneys, and the most common one is lung metastasis of renal tumors, in addition to that, bone metastasis, brain metastasis and abdominal cavity extensive lymph node metastasis may also occur.