The treatment principles for kidney cancer vary depending on the stage of the cancer. For localized or locally advanced kidney cancer, surgical treatment is primarily used. For advanced kidney cancer, a comprehensive medical treatment approach is mainly used. Surgical treatment is typically the first choice for treating kidney cancer and is currently recognized as a curative method. In early stages, kidney-sparing surgery or radical nephrectomy can be performed using either laparoscopic or open surgery. For mid to late-stage kidney cancer patients, radical nephrectomy is commonly performed as an open surgery. For advanced kidney cancer, treatment primarily involves medical management, which may include surgical removal of the affected kidney. Additionally, treatments can be supplemented with immunotherapy or targeted therapy to improve treatment efficacy. Therefore, different stages of kidney cancer require different treatment plans.