Kidney cancer, also known as renal cell carcinoma, originates from renal tubular epithelial cells and accounts for about 85% of primary renal malignancies. The cause of kidney cancer is still not clear, and its development may be the result of a combination of factors, which may be related to smoking, obesity, occupational exposure, genetic factors and so on. Kidney cancer often involves one side of the kidney, and most of them are solitary, while only about 2% of the cases are bilateral or simultaneous. The high incidence age of kidney cancer is 50-70 years old, and there are more men than women. Generally, there is no obvious clinical manifestation in the early stage. Later on, as the disease develops, the main clinical manifestations are hematuria, pain and masses. After the diagnosis of kidney cancer, radical resection of unilateral kidney is mainly used.